feat: drop pywal theming for the unified desktop themeHEADmaster

wallp no longer owns a colour theme. The --theme flag, the THEME config
key, the persisted ~/.config/wallp/theme file and the wal invocation are
gone; finalize now writes ~/.cache/udt/wpaper and hands it to udt-accent,
which owns the whole palette (rofi, Hyprland, Firefox, quickshell,
Sublime). That call is best-effort: a missing or failing udt-accent must
never stop a wallpaper from being set, so wal is also dropped from the
required-binary check.

Tests follow the same shape: the theme-resolution and apply_theme cases
are removed, the wal stub is replaced by udt-accent, and two new cases
cover finalize calling udt-accent on the symlink and surviving its
failure.

Docs updated to match, including the install method: ~/bin/wallp is now
a symlink to the checkout rather than a copy, so repo edits no longer
need a manual re-copy to reach the live desktop.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

5 files changed, 93 insertions, 176 deletions

diff --git a/CLAUDE.md b/CLAUDE.md
index 3387dee..c30a2c8 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -7,14 +7,16 @@ Guidance for AI agents working in this repo.
 `wallp` — a single bash script that sets and restores wallpapers on a fixed
 two-screen wayland (sway/hyprland) setup. It merges two older scripts
 (`multiwal.sh` interactive setter, `qar-lastwall.sh` restorer). Uses `swaybg` to
-paint wallpapers, `qarma` for GUI selection, `wal` (pywal) for the color theme.
+paint wallpapers, `qarma` for GUI selection, and `udt-accent` (the unified
+desktop theme tool, outside this repo) to refresh the accent colour from the
+wallpaper. `wallp` no longer runs pywal and has no theme of its own.
 
 Logical screens are `H` (horizontal) and `V` (vertical), mapped to physical
 outputs via config (`OUTPUT_H`/`OUTPUT_V`).
 
 ## Layout
 
-- `wallp` — the whole program (one bash file, ~320 lines).
+- `wallp` — the whole program (one bash file, ~310 lines).
 - `tests/wallp.bats` — bats test suite (the only tests).
 - `wallp.conf.example` — sample config.
 - `docs/superpowers/specs/` — design spec.
@@ -29,7 +31,7 @@ bats tests/wallp.bats
 ```
 
 Requires `bats` (1.5.0 known good). Tests run hermetically: `setup()` creates a
-temp `$HOME`, stubs `swaybg`/`wal`/`qarma`/`notify-send`/`pkill`/`kill` on `PATH`
+temp `$HOME`, stubs `swaybg`/`udt-accent`/`qarma`/`notify-send`/`pkill`/`kill` on `PATH`
 (each logs its call to `$HOME/calls.log` and exits 0), then `source`s `wallp`.
 The sourcing guard at EOF (`[ "${BASH_SOURCE[0]}" = "$0" ]`) keeps `main` from
 running on source — **do not remove it.**
@@ -44,18 +46,18 @@ Syntax check: `bash -n wallp`.
   the function directly when asserting on globals (`CONF_*`, `SET_*`) or
   filesystem side effects, since `run` executes in a subshell.
 - **Pure logic is unit-testable** (conf parse, arg parse, tilde expansion, output
-  mapping, theme resolution). Side-effecting bits (`swaybg`, `wal`, `qarma`) are
-  isolated in thin functions and exercised via the PATH stubs.
+  mapping). Side-effecting bits (`swaybg`, `udt-accent`, `qarma`) are isolated in
+  thin functions and exercised via the PATH stubs.
 - `set -u` is on. Empty-array expansion `"${set_args[@]}"` is safe on bash ≥ 4.4
   (this host is fine). Guard env vars with `${VAR:-}`.
 - Quote all paths (wallpaper filenames may contain spaces).
 
 ## Critical gotchas
 
-- **Install is a COPY, not a symlink.** The live binary is `~/bin/wallp`, copied
-  from this repo. After editing repo `wallp`, re-copy:
-  `cp /home/danix/Programming/GIT/wallp/wallp ~/bin/wallp`
-  Otherwise hypr autostart/keybind run the stale version.
+- **Install is a symlink.** `~/bin/wallp` points at this checkout's `wallp`, so
+  repo edits are live immediately for the hypr autostart/keybind. No re-copy
+  step. (It used to be a plain copy, which shipped stale versions.)
+  Recreate with: `ln -sf "$PWD/wallp" ~/bin/wallp`
 - **qarma `--list` needs `--radiolist --print-column=2`.** A plain `--list`
   prints nothing on selection (bug that shipped once). `qarma_select` depends on
   these flags; a regression test guards it.
@@ -71,14 +73,17 @@ Syntax check: `bash -n wallp`.
   the other — there's a test for this; keep it green.
 - **`load_conf` return codes:** 0 ok, 1 invalid (missing required key), 10
   bootstrapped (template just written → caller exits 0, no wallpaper change).
-- **Persistence is wallp-owned**, under `~/.config/wallp/` (`wall_h`, `wall_v`,
-  `theme`). `~/.cache/wal/wpaper` symlink is still maintained (rofi reads it).
-  `~/bin/wal.sh` was trimmed to dunst+kitty glue only; it no longer touches
-  wallpaper pointers.
+- **Persistence is wallp-owned**, under `~/.config/wallp/` (`wall_h`, `wall_v`).
+  `finalize` writes the `~/.cache/udt/wpaper` symlink, then calls
+  `udt-accent "$HOME/.cache/udt/wpaper"`. That call is never fatal: if the binary
+  is missing or exits non-zero, the wallpaper still stands. `udt-accent` owns the
+  whole palette (rofi, Hyprland, Firefox, quickshell, Sublime), so nothing here
+  renders colours first.
 
 ## External integration (outside this repo)
 
-- `~/bin/wal.sh` — wal's `-o` hook; dunst + kitty theming only now.
+- `~/bin/udt-accent` — unified desktop theme accent picker; reads
+  `~/.cache/udt/wpaper`, writes the rest of the palette.
 - `~/.config/hypr/sections/autostart.lua` → `wallp --restore`.
 - `~/.config/hypr/sections/keybindings.lua` → `wallp --set` (mainMod+Return).
 - Old `~/bin/multiwal.sh` + `qar-lastwall.sh` kept as fallback, unreferenced.
diff --git a/README.md b/README.md
index d66216f..394ba29 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 # wallp
 
 A single-script wallpaper manager for a two-screen Wayland (sway / Hyprland)
-setup. Sets and restores wallpapers per screen, drives a [pywal](https://github.com/dylanaraps/pywal)
-color theme, and remembers what you had across reboots.
+setup. Sets and restores wallpapers per screen, refreshes the desktop accent
+colour to match, and remembers what you had across reboots.
 
 It replaces two older scripts — an interactive setter and a session restorer —
 with one flag-driven program.
@@ -16,10 +16,11 @@ with one flag-driven program.
   restarted (no full-screen blank flash).
 - **GUI or CLI** — pick wallpapers through a [qarma](https://github.com/luebking/qarma)
   dialog, or pass file paths as arguments for scripted/headless use.
-- **Session restore** — re-applies the last wallpapers (and last theme) at login,
-  falling back to configured defaults on first run.
-- **Theme persistence** — the last theme sticks until you change it; `--restore`
-  brings it back, not the config default.
+- **Session restore** — re-applies the last wallpapers at login, falling back to
+  configured defaults on first run.
+- **Unified desktop theme** — after every change `wallp` hands the new wallpaper
+  to `udt-accent`, which owns the whole palette (rofi, Hyprland, Firefox,
+  quickshell, Sublime). `wallp` itself no longer runs pywal or stores a theme.
 - **Self-bootstrapping config** — first run writes a template config and tells
   you to fill it in, without touching your wallpapers.
 
@@ -29,25 +30,26 @@ with one flag-driven program.
 |---------------|---------------------|--------------------------------------|
 | `bash`        | yes (≥ 4.4)         | the script itself                    |
 | `swaybg`      | yes                 | paints the wallpaper on each output  |
-| `wal` (pywal) | yes                 | generates/applies the color theme    |
+| `udt-accent`  | optional            | refreshes the desktop accent colour  |
 | `qarma`       | only for GUI `--set`| screen-choice menu + file picker     |
-| `notify-send` | optional            | desktop notification on theme change |
 | `bats`        | dev only            | running the test suite               |
 
 `wallp` checks for the required binaries at startup and exits with a clear
-message if one is missing.
+message if one is missing. `udt-accent` is looked up at run time: if it is
+absent, or it fails, the wallpaper is still set and only the accent refresh is
+skipped.
 
 ## Install
 
 `wallp` is a standalone script — put it somewhere on your `PATH`:
 
 ```bash
-cp wallp ~/bin/wallp
-chmod +x ~/bin/wallp
+ln -s "$PWD/wallp" ~/bin/wallp
 ```
 
-> **Note:** this is a plain copy. If you later edit the script in the repo,
-> re-copy it to `~/bin` for the change to take effect.
+A symlink keeps the installed command in step with the checkout, so edits take
+effect at once. A plain `cp wallp ~/bin/wallp && chmod +x ~/bin/wallp` works too,
+but then every repo edit needs a re-copy.
 
 ## Configuration
 
@@ -58,9 +60,6 @@ wallpaper** — edit it, then run again.
 ```ini
 # ~/.config/wallp/wallp.conf
 
-# Optional. Defaults to sexy-splurge if omitted.
-THEME=sexy-splurge
-
 # Physical output names. Find yours with:
 #   swaymsg -t get_outputs      (sway)
 #   hyprctl monitors            (Hyprland)
@@ -79,8 +78,8 @@ Format notes:
 - Plain `key=value`, one per line. Blank lines and `#` comments are ignored.
 - The file is **not** sourced as shell — it's parsed manually, so it can't run
   code.
-- `OUTPUT_H`, `OUTPUT_V`, `DEFAULT_H`, `DEFAULT_V` are required. A missing or
-  empty one is a hard error (named in the message). `THEME` is optional.
+- `OUTPUT_H`, `OUTPUT_V`, `DEFAULT_H`, `DEFAULT_V` are all required. A missing
+  or empty one is a hard error (named in the message).
 
 ## Usage
 
@@ -92,7 +91,6 @@ wallp --set H=<file>       Set the horizontal screen only
 wallp --set V=<file>       Set the vertical screen only
 wallp --set H=<f> V=<f>    Set both screens
 wallp --restore            Restore last session (defaults if none saved)
-wallp --theme <name>       Override the theme (combine with --set or --restore)
 ```
 
 ### Examples
@@ -109,22 +107,8 @@ wallp --set H=~/pics/wide.jpg V=~/pics/tall.jpg
 
 # Restore on login (defaults on first ever run).
 wallp --restore
-
-# Set a wallpaper and switch theme in one go; the theme persists afterwards.
-wallp --set H=~/pics/wide.jpg --theme gruvbox
 ```
 
-### Theme precedence
-
-When resolving which theme to apply, `wallp` uses, in order:
-
-1. `--theme <name>` on the command line,
-2. the last persisted theme (`~/.config/wallp/theme`),
-3. `THEME` from the config,
-4. the built-in default `sexy-splurge`.
-
-The resolved theme is always saved, so it carries across `--restore`.
-
 ### GUI vs CLI
 
 `qarma` is used **only** to draw windows — the screen-choice menu, the file
@@ -145,21 +129,20 @@ State is owned entirely by `wallp`:
 | `~/.config/wallp/wallp.conf`  | configuration                                   |
 | `~/.config/wallp/wall_h`      | persisted horizontal wallpaper path             |
 | `~/.config/wallp/wall_v`      | persisted vertical wallpaper path               |
-| `~/.config/wallp/theme`       | persisted theme name                            |
 | `~/.cache/wallp/H.pid`        | PID of the horizontal `swaybg`                  |
-| `~/.cache/wallp/V.pid`        | PID of the vertical `swaybg`                     |
-| `~/.cache/wal/wpaper`         | symlink to the current horizontal image         |
+| `~/.cache/wallp/V.pid`        | PID of the vertical `swaybg`                    |
+| `~/.cache/udt/wpaper`         | symlink to the current horizontal image         |
 
 Setting a screen: validate the file, kill **only** that screen's old `swaybg`,
 launch a new one (`swaybg -o <output> -i <file> -m fill`), record the new PID,
-and save the path. Then update the `wpaper` symlink and apply the theme via
-`wal --backend colorz -nq --theme <name> -o ~/bin/wal.sh`.
+and save the path. Then update the `~/.cache/udt/wpaper` symlink and run
+`udt-accent ~/.cache/udt/wpaper` to re-derive the desktop accent colour.
 
 Restoring: for each screen, use the saved path if present, otherwise the
-configured default; apply it; then re-apply the resolved (persisted) theme.
+configured default; apply it; then refresh the accent the same way.
 
-The `~/.cache/wal/wpaper` symlink is kept because other tools (e.g. rofi themes)
-read it.
+The `wpaper` symlink is the hand-off point to the rest of the theme: other
+tools (rofi, `udt-accent`) read it rather than `wallp`'s own state.
 
 ## Integration with sway / Hyprland
 
@@ -184,7 +167,7 @@ so they can be unit-tested. Tests use [bats](https://github.com/bats-core/bats-c
 bats tests/wallp.bats
 ```
 
-The suite stubs `swaybg`, `wal`, `qarma`, and `notify-send` on `PATH` and runs
+The suite stubs `swaybg`, `udt-accent`, `qarma`, and `notify-send` on `PATH` and runs
 against a temporary `$HOME`, so it touches nothing real. Contributions should
 follow TDD — add a failing test first.
 
diff --git a/tests/wallp.bats b/tests/wallp.bats
index d16f1a3..56f3d54 100644
--- a/tests/wallp.bats
+++ b/tests/wallp.bats
@@ -8,7 +8,7 @@ setup() {
   mkdir -p "$STUB_DIR"
   export PATH="$STUB_DIR:$PATH"
   local bin
-  for bin in swaybg wal qarma notify-send pkill kill; do
+  for bin in swaybg udt-accent qarma notify-send pkill kill; do
     cat > "$STUB_DIR/$bin" <<EOF
 #!/bin/bash
 echo "$bin \$*" >> "$TMP_HOME/calls.log"
@@ -42,13 +42,11 @@ teardown() {
   conf="$HOME/c.conf"
   printf '%s\n' \
     '# comment' '' \
-    'THEME=mytheme' \
     'OUTPUT_H=DP-1' \
     'OUTPUT_V=DP-3' \
     'DEFAULT_H=~/p/h.png' \
     'DEFAULT_V=/abs/v.png' > "$conf"
   parse_conf "$conf"
-  [ "$CONF_THEME" = "mytheme" ]
   [ "$CONF_OUTPUT_H" = "DP-1" ]
   [ "$CONF_OUTPUT_V" = "DP-3" ]
   [ "$CONF_DEFAULT_H" = "$HOME/p/h.png" ]
@@ -71,41 +69,6 @@ teardown() {
   [[ "$output" == *"DEFAULT_V"* ]]
 }
 
-@test "load_conf ok with THEME fallback" {
-  mkdir -p "$HOME/.config/wallp"
-  printf '%s\n' 'OUTPUT_H=DP-1' 'OUTPUT_V=DP-3' \
-    'DEFAULT_H=/a.png' 'DEFAULT_V=/b.png' \
-    > "$HOME/.config/wallp/wallp.conf"
-  load_conf
-  [ "$?" -eq 0 ]
-  [ "$CONF_THEME" = "sexy-splurge" ]
-}
-
-@test "resolve_theme flag wins over all" {
-  CONF_THEME="conf"; mkdir -p "$HOME/.config/wallp"
-  echo persisted > "$HOME/.config/wallp/theme"
-  run resolve_theme flagged
-  [ "$output" = "flagged" ]
-}
-
-@test "resolve_theme persisted beats conf" {
-  CONF_THEME="conf"; mkdir -p "$HOME/.config/wallp"
-  echo persisted > "$HOME/.config/wallp/theme"
-  run resolve_theme ''
-  [ "$output" = "persisted" ]
-}
-
-@test "resolve_theme uses conf when no persisted" {
-  CONF_THEME="conf"
-  run resolve_theme ''
-  [ "$output" = "conf" ]
-}
-
-@test "persist_theme writes the file" {
-  persist_theme "abc"
-  [ "$(cat "$HOME/.config/wallp/theme")" = "abc" ]
-}
-
 @test "output_for maps logical to physical" {
   CONF_OUTPUT_H="DP-1"; CONF_OUTPUT_V="DP-3"
   run output_for H
@@ -180,66 +143,71 @@ teardown() {
   [ "$(cat "$HOME/.cache/wallp/H.pid")" = "99999" ]
 }
 
-@test "update_wpaper symlinks to H image" {
+@test "finalize refreshes the accent from the wpaper symlink" {
   : > "$HOME/h.png"; mkdir -p "$HOME/.config/wallp"
   echo "$HOME/h.png" > "$HOME/.config/wallp/wall_h"
-  update_wpaper
-  [ "$(readlink "$HOME/.cache/wal/wpaper")" = "$HOME/h.png" ]
+  finalize
+  grep -q "udt-accent $HOME/.cache/udt/wpaper" "$HOME/calls.log"
+}
+
+@test "finalize survives a failing udt-accent" {
+  cat > "$STUB_DIR/udt-accent" <<'EOS'
+#!/bin/bash
+exit 1
+EOS
+  chmod +x "$STUB_DIR/udt-accent"
+  : > "$HOME/h.png"; mkdir -p "$HOME/.config/wallp"
+  echo "$HOME/h.png" > "$HOME/.config/wallp/wall_h"
+  run finalize
+  [ "$status" -eq 0 ]
 }
 
-@test "apply_theme runs wal and persists theme" {
-  apply_theme "mytheme"
-  [ "$(cat "$HOME/.config/wallp/theme")" = "mytheme" ]
-  grep -q "wal --backend colorz -nq --theme mytheme -o $HOME/bin/wal.sh" "$HOME/calls.log"
-  grep -q "notify-send" "$HOME/calls.log"
+@test "update_wpaper symlinks to H image" {
+  : > "$HOME/h.png"; mkdir -p "$HOME/.config/wallp"
+  echo "$HOME/h.png" > "$HOME/.config/wallp/wall_h"
+  update_wpaper
+  [ "$(readlink "$HOME/.cache/udt/wpaper")" = "$HOME/h.png" ]
 }
 
 @test "restore uses persisted wallpapers" {
-  CONF_OUTPUT_H="DP-1"; CONF_OUTPUT_V="DP-3"; CONF_THEME="conf"
+  CONF_OUTPUT_H="DP-1"; CONF_OUTPUT_V="DP-3"
   CONF_DEFAULT_H="$HOME/dh.png"; CONF_DEFAULT_V="$HOME/dv.png"
   : > "$HOME/saved_h.png"; : > "$HOME/saved_v.png"
   mkdir -p "$HOME/.config/wallp"
   echo "$HOME/saved_h.png" > "$HOME/.config/wallp/wall_h"
   echo "$HOME/saved_v.png" > "$HOME/.config/wallp/wall_v"
-  do_restore ""
+  do_restore
   grep -q "swaybg -o DP-1 -i $HOME/saved_h.png" "$HOME/calls.log"
   grep -q "swaybg -o DP-3 -i $HOME/saved_v.png" "$HOME/calls.log"
 }
 
 @test "restore falls back to conf defaults" {
-  CONF_OUTPUT_H="DP-1"; CONF_OUTPUT_V="DP-3"; CONF_THEME="conf"
+  CONF_OUTPUT_H="DP-1"; CONF_OUTPUT_V="DP-3"
   : > "$HOME/dh.png"; : > "$HOME/dv.png"
   CONF_DEFAULT_H="$HOME/dh.png"; CONF_DEFAULT_V="$HOME/dv.png"
-  do_restore ""
+  do_restore
   grep -q "swaybg -o DP-1 -i $HOME/dh.png" "$HOME/calls.log"
   [ "$(cat "$HOME/.config/wallp/wall_h")" = "$HOME/dh.png" ]
 }
 
 @test "set CLI partial sets only V" {
-  CONF_OUTPUT_H="DP-1"; CONF_OUTPUT_V="DP-3"; CONF_THEME="conf"
+  CONF_OUTPUT_H="DP-1"; CONF_OUTPUT_V="DP-3"
   : > "$HOME/v.png"
-  do_set "" "V=$HOME/v.png"
+  do_set "V=$HOME/v.png"
   grep -q "swaybg -o DP-3 -i $HOME/v.png" "$HOME/calls.log"
   ! grep -q "swaybg -o DP-1" "$HOME/calls.log"
 }
 
-@test "set CLI persists flag theme" {
-  CONF_OUTPUT_H="DP-1"; CONF_OUTPUT_V="DP-3"; CONF_THEME="conf"
-  : > "$HOME/h.png"
-  do_set "flagtheme" "H=$HOME/h.png"
-  [ "$(cat "$HOME/.config/wallp/theme")" = "flagtheme" ]
-}
-
 @test "set with no args and no display errors" {
-  CONF_OUTPUT_H="DP-1"; CONF_OUTPUT_V="DP-3"; CONF_THEME="conf"
+  CONF_OUTPUT_H="DP-1"; CONF_OUTPUT_V="DP-3"
   unset WAYLAND_DISPLAY
-  run do_set ""
+  run do_set
   [ "$status" -eq 1 ]
   [[ "$output" == *"no display"* ]]
 }
 
 @test "set qarma path applies selected screen" {
-  CONF_OUTPUT_H="DP-1"; CONF_OUTPUT_V="DP-3"; CONF_THEME="conf"
+  CONF_OUTPUT_H="DP-1"; CONF_OUTPUT_V="DP-3"
   export WAYLAND_DISPLAY="wayland-0"
   : > "$HOME/picked.png"
   # qarma stub: --list returns the screen choice; --file-selection returns a path.
@@ -259,7 +227,7 @@ esac
 exit 0
 EOF
   chmod +x "$STUB_DIR/qarma"
-  do_set ""
+  do_set
   grep -q "swaybg -o DP-3 -i $HOME/picked.png" "$HOME/calls.log"
   ! grep -q "swaybg -o DP-1" "$HOME/calls.log"
 }
@@ -306,15 +274,6 @@ EOF
   [ ! -e "$HOME/.cache/wallp/H.pid" ]
 }
 
-@test "theme flag honored through main with restore" {
-  unset WAYLAND_DISPLAY
-  mkdir -p "$HOME/.config/wallp"
-  printf '%s\n' 'OUTPUT_H=DP-1' 'OUTPUT_V=DP-3' \
-    'DEFAULT_H=/dh.png' 'DEFAULT_V=/dv.png' > "$HOME/.config/wallp/wallp.conf"
-  main --restore --theme tflag
-  [ "$(cat "$HOME/.config/wallp/theme")" = "tflag" ]
-}
-
 @test "missing required binary errors before acting" {
   unset WAYLAND_DISPLAY
   rm -f "$STUB_DIR/swaybg"     # swaybg now absent
diff --git a/wallp b/wallp
index 9480b12..be5ff50 100755
--- a/wallp
+++ b/wallp
@@ -14,7 +14,7 @@ expand_tilde() {
 
 # Parse key=value conf into CONF_* globals. Ignores blanks and #-comments.
 # Expands ~ in DEFAULT_* path values. Does not validate (see require_conf_keys).
-CONF_THEME="" CONF_OUTPUT_H="" CONF_OUTPUT_V="" CONF_DEFAULT_H="" CONF_DEFAULT_V=""
+CONF_OUTPUT_H="" CONF_OUTPUT_V="" CONF_DEFAULT_H="" CONF_DEFAULT_V=""
 parse_conf() {
   local file="$1" line key val
   while IFS= read -r line || [ -n "$line" ]; do
@@ -22,7 +22,6 @@ parse_conf() {
     key="${line%%=*}"
     val="${line#*=}"
     case "$key" in
-      THEME)     CONF_THEME="$val" ;;
       OUTPUT_H)  CONF_OUTPUT_H="$val" ;;
       OUTPUT_V)  CONF_OUTPUT_V="$val" ;;
       DEFAULT_H) CONF_DEFAULT_H="$(expand_tilde "$val")" ;;
@@ -38,8 +37,6 @@ write_conf_template() {
   mkdir -p "$(dirname "$path")"
   cat > "$path" <<'EOF'
 # wallp config. Fill in real values, then re-run wallp.
-# THEME is optional (defaults to sexy-splurge).
-THEME=sexy-splurge
 # Physical output names (see: swaymsg -t get_outputs / wlr-randr)
 OUTPUT_H=DP-1
 OUTPUT_V=DP-3
@@ -73,28 +70,10 @@ load_conf() {
     return 10
   fi
   parse_conf "$path"
-  [ -z "$CONF_THEME" ] && CONF_THEME="sexy-splurge"
   require_conf_keys || return 1
   return 0
 }
 
-theme_file() { printf '%s\n' "$HOME/.config/wallp/theme"; }
-
-persist_theme() {
-  local f; f="$(theme_file)"
-  mkdir -p "$(dirname "$f")"
-  printf '%s\n' "$1" > "$f"
-}
-
-# Precedence: flag arg > persisted file > CONF_THEME > sexy-splurge.
-resolve_theme() {
-  local flag="$1" f; f="$(theme_file)"
-  if [ -n "$flag" ]; then printf '%s\n' "$flag"; return; fi
-  if [ -s "$f" ]; then head -n1 "$f"; return; fi
-  if [ -n "${CONF_THEME:-}" ]; then printf '%s\n' "$CONF_THEME"; return; fi
-  printf '%s\n' "sexy-splurge"
-}
-
 # Maps logical output (H|V) to physical connector name from config.
 output_for() {
   case "$1" in
@@ -167,19 +146,11 @@ update_wpaper() {
   local wf img link; wf="$(wall_file_for H)"
   [ -s "$wf" ] || return 0
   img="$(cat "$wf")"
-  link="$HOME/.cache/wal/wpaper"
+  link="$HOME/.cache/udt/wpaper"
   mkdir -p "$(dirname "$link")"
   ln -sf "$img" "$link"
 }
 
-apply_theme() {
-  local theme="$1"
-  persist_theme "$theme"
-  wal --backend colorz -nq --theme "$theme" -o "$HOME/bin/wal.sh"
-  command -v notify-send >/dev/null 2>&1 && \
-    notify-send -u normal -t 5000 "color theme update" "setting color theme to: $theme"
-}
-
 # Pick saved path for a logical output, else its conf default.
 restore_path_for() {
   local logical="$1" wf; wf="$(wall_file_for "$logical")"
@@ -191,17 +162,23 @@ restore_path_for() {
 }
 
 do_restore() {
-  local flag_theme="$1" logical file
+  local logical file
   for logical in H V; do
     file="$(restore_path_for "$logical")"
     apply_output "$logical" "$file" || true
   done
-  finalize "$(resolve_theme "$flag_theme")"
+  finalize
 }
 
 finalize() {
   update_wpaper
-  apply_theme "$1"
+  # Refresh the theme accent from the wallpaper. udt-accent owns the whole
+  # palette: it writes rofi, Hyprland, Firefox, quickshell and Sublime, so
+  # there is no pywal run here to render anything first. Never fatal: a
+  # failure here must not stop the wallpaper from being set.
+  if command -v udt-accent >/dev/null 2>&1 && [ -e "$HOME/.cache/udt/wpaper" ]; then
+    udt-accent "$HOME/.cache/udt/wpaper" >/dev/null 2>&1 || true
+  fi
 }
 
 # Interactive selection via qarma. Populates SET_H/SET_V. Isolated for testing.
@@ -227,7 +204,6 @@ qarma_select() {
 }
 
 do_set() {
-  local flag_theme="$1"; shift
   SET_H="" SET_V=""
   if [ "$#" -gt 0 ]; then
     parse_set_args "$@" || return 1
@@ -242,7 +218,7 @@ do_set() {
   fi
   [ -n "$SET_H" ] && { apply_output H "$SET_H" || true; }
   [ -n "$SET_V" ] && { apply_output V "$SET_V" || true; }
-  finalize "$(resolve_theme "$flag_theme")"
+  finalize
 }
 
 show_help() {
@@ -256,7 +232,6 @@ Usage:
   wallp --set V=<file>       Set vertical screen only
   wallp --set H=<f> V=<f>    Set both screens
   wallp --restore            Restore last session (defaults if none)
-  wallp --theme <name>       Override theme (with --set or --restore)
 
 Config: ~/.config/wallp/wallp.conf"
   if [ -n "${WAYLAND_DISPLAY:-}" ] && command -v qarma >/dev/null 2>&1; then
@@ -271,8 +246,7 @@ Config: ~/.config/wallp/wallp.conf"
 <tt>wallp --set H=&lt;file&gt;${n}${n}${n}${n}</tt> Set horizontal screen only<br>\
 <tt>wallp --set V=&lt;file&gt;${n}${n}${n}${n}</tt> Set vertical screen only<br>\
 <tt>wallp --set H=&lt;f&gt; V=&lt;f&gt;${n}</tt> Set both screens<br>\
-<tt>wallp --restore${n}${n}${n}${n}${n}${n}${n}</tt> Restore last session (defaults if none)<br>\
-<tt>wallp --theme &lt;name&gt;${n}${n}${n}${n}${n}</tt> Override theme (with --set or --restore)<br><br>\
+<tt>wallp --restore${n}${n}${n}${n}${n}${n}${n}</tt> Restore last session (defaults if none)<br><br>\
 <b>Config:</b> <tt>~/.config/wallp/wallp.conf</tt>"
     # --width prevents qarma from wrapping the description column onto new lines.
     # (GTK enforces a minimum dialog width, so the window may look wider.)
@@ -282,12 +256,12 @@ Config: ~/.config/wallp/wallp.conf"
   fi
 }
 
-# Verify required external binaries are present. swaybg + wal always required;
+# Verify required external binaries are present. swaybg always required;
 # qarma required only when GUI selection is needed (caller passes "gui").
 # notify-send is optional and not checked here.
 require_bins() {
   local need_gui="${1:-}" bin
-  for bin in swaybg wal; do
+  for bin in swaybg; do
     if ! command -v "$bin" >/dev/null 2>&1; then
       echo "wallp: required binary '$bin' not found in PATH" >&2
       return 1
@@ -301,14 +275,12 @@ require_bins() {
 }
 
 main() {
-  local action="" flag_theme="" set_args=()
+  local action="" set_args=()
   while [ "$#" -gt 0 ]; do
     case "$1" in
       --help|-h) show_help; return 0 ;;
       --set)     action="set" ;;
       --restore) action="restore" ;;
-      --theme)   shift; flag_theme="${1:-}";
-                 [ -z "$flag_theme" ] && { echo "wallp: --theme needs a name" >&2; return 1; } ;;
       H=*|V=*)   set_args+=("$1") ;;
       *)         echo "wallp: unknown argument '$1'" >&2; show_help; return 1 ;;
     esac
@@ -329,8 +301,8 @@ main() {
   if [ "$rc" -ne 0 ]; then return 1; fi
 
   case "$action" in
-    set)     do_set "$flag_theme" "${set_args[@]}" ;;
-    restore) do_restore "$flag_theme" ;;
+    set)     do_set "${set_args[@]}" ;;
+    restore) do_restore ;;
   esac
 }
 
diff --git a/wallp.conf.example b/wallp.conf.example
index 45a6b55..26cd444 100644
--- a/wallp.conf.example
+++ b/wallp.conf.example
@@ -1,6 +1,4 @@
 # wallp config. Copy to ~/.config/wallp/wallp.conf and edit.
-# THEME is optional (defaults to sexy-splurge).
-THEME=sexy-splurge
 # Physical output names (swaymsg -t get_outputs / wlr-randr)
 OUTPUT_H=DP-1
 OUTPUT_V=DP-3