Accentkleur per tegel afleiden uit het Home Assistant-domein

Scripts en lights hadden allebei hetzelfde gele rondje, dus op het scherm
was script.goede_morgen niet te onderscheiden van light.woonkamer_2. Een
script vuur je af, een lamp zet je aan of uit; dat hoort niet hetzelfde
te zijn.

De kleur komt nu uit het domein van het entity_id — Home Assistant's
eigen indeling — in plaats van uit tien handmatige kleurvelden per tegel:

  script / scene / button / input_button / automation  -> ACCENT_ACTION (paars)
  light                                                -> ACCENT_LIGHT (amber)
  al het overige                                       -> ACCENT_DEVICE (cyaan)

TILE*_CIRCLE_ACTIVE_COLOR en TILE*_ICON_DISABLED_COLOR staan hiervoor op
de sentinel ${ACCENT_AUTO}, bewust buiten het 24-bits kleurbereik zodat
een echte hexwaarde altijd wint. Tegel 8 gebruikt dat nog steeds: de
brievenbus blijft rood zodra er post ligt.

Alleen de drie scripttegels (3, 4, 5) verschuiven van amber naar paars.
Light blijft amber en de overige apparaten blijven cyaan, dus verder
verandert er visueel niets.

De sliderkleur in de long-press-overlay lost dezelfde sentinel op, zodat
een tegel met slider ook automatisch de goede kleur krijgt.

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

TILE_CONFIGURATION.md

@@ -40,6 +40,35 @@ image blit from every redraw, which is what makes scrolling usable on this
 board. The same gradient is reused as the backdrop of the slider, color and
 thermostat overlays through the `style_bg_grad` style.
 
+## Accent colors are automatic
+
+A tile's accent color is derived from the **Home Assistant domain** — the part
+of the entity id before the dot:
+
+| Entity | Domain | Accent |
+|--------|--------|--------|
+| `script.goede_morgen` | `script` | `ACCENT_ACTION` (violet) |
+| `scene.avondlicht` | `scene` | `ACCENT_ACTION` (violet) |
+| `light.woonkamer_2` | `light` | `ACCENT_LIGHT` (amber) |
+| `vacuum.s8` | `vacuum` | `ACCENT_DEVICE` (cyan) |
+| `climate.airco` | `climate` | `ACCENT_DEVICE` (cyan) |
+
+The distinction that matters: a script or scene is something you *fire*, a
+device is something you switch *on and off*. Those should not look the same.
+
+Two of the ten per-tile color keys participate: `TILE*_CIRCLE_ACTIVE_COLOR`
+and `TILE*_ICON_DISABLED_COLOR`. Set them to `${ACCENT_AUTO}` to let the domain
+decide — that is the default for every tile — or to a real hex value to
+override that one tile. Tile 8 does exactly that: the mailbox turns red when
+there is post, regardless of its domain.
+
+Because the color follows the entity, dropping a different entity into a tile
+gives it the right color without touching any color key.
+
+> The domain lookup lives in a small `accent_for` lambda that appears **twice**
+> in `home-like.yaml`: once in `ui_refresh` (for the tiles) and once in
+> `open_value_overlay` (for the slider fill). Keep the two copies in sync.
+
 ---
 
 ## Global settings
@@ -59,6 +88,10 @@ thermostat overlays through the `style_bg_grad` style.
 | `NIGHT_DIM_BRIGHTNESS` | `"18"` | Backlight brightness (%) during night hours. |
 | `BG_TOP_COLOR` | `"0xAEC4D9"` | Top color of the background gradient. |
 | `BG_BOTTOM_COLOR` | `"0xD6BB9E"` | Bottom color of the background gradient. |
+| `ACCENT_AUTO` | `"0x1000000"` | Sentinel meaning "derive this color from the entity domain". Deliberately outside the 24-bit color range. |
+| `ACCENT_ACTION` | `"0x8B5CF6"` | Accent for `script`, `scene`, `button`, `input_button`, `automation`. |
+| `ACCENT_LIGHT` | `"0xFEC600"` | Accent for `light`. |
+| `ACCENT_DEVICE` | `"0x00C5EC"` | Accent for everything else (switch, fan, cover, climate, vacuum, media_player, …). |
 
 ---
 
@@ -89,10 +122,10 @@ All colors are 24-bit hex in the format `"0xRRGGBB"`.
 
 | Key | Description |
 |-----|-------------|
-| `TILE*_CIRCLE_ACTIVE_COLOR` | Icon circle background when active. |
+| `TILE*_CIRCLE_ACTIVE_COLOR` | Icon circle background when active. `${ACCENT_AUTO}` = derive from the entity domain. |
 | `TILE*_CIRCLE_DISABLED_COLOR` | Icon circle background when inactive. |
 | `TILE*_ICON_ACTIVE_COLOR` | Icon glyph color when active. |
-| `TILE*_ICON_DISABLED_COLOR` | Icon glyph color when inactive. |
+| `TILE*_ICON_DISABLED_COLOR` | Icon glyph color when inactive. `${ACCENT_AUTO}` = derive from the entity domain. |
 | `TILE*_BG_ACTIVE_COLOR` | Tile background when active. |
 | `TILE*_BG_DISABLED_COLOR` | Tile background when inactive. |
 | `TILE*_TITLE_ACTIVE_COLOR` | Title text color when active. |