App 2.27.2: Terminal in the accent colour; Original as a colour choice

Retro and Terminal are one entry each; the accent colour drop-down
offers "Original" first for them, remembered per style. The old
"Retro (accent colour)" entry is folded in and its stored value
migrated. Emulator only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LhzAVaUyqcw5PkGjz4mWW6

app/src/main/java/com/evsuite/abrp/OverviewStyle.java

@@ -2,43 +2,65 @@ package com.evsuite.abrp;
 
 /**
  * The Overview styles in the order of the Settings drop-down, the value each is stored as, and
- * whether it is drawn in the chosen accent colour. Styles with their own fixed palette (Retro's
- * display, the starship console, the cartoon, the blueprint, the terminal, the flight display,
- * the nixie tubes) ignore it, so Settings only offers the accent colour for the others. Pure
- * Java, unit-tested.
+ * how it takes colour:
+ *
+ * - {@link #usesAccent}: drawn in the chosen accent colour, so Settings offers the accent
+ *   colour for it. Styles with only their own fixed palette (the starship console, the cartoon,
+ *   the blueprint, the flight display, the nixie tubes) ignore it and Settings greys it out.
+ * - {@link #hasOriginal}: has an original palette of its own as well (Retro's turquoise
+ *   display, the terminal's green phosphor); Settings then offers "Original colours" above the
+ *   accent colours, remembered per style under {@link #originalKey()}.
+ *
+ * Pure Java, unit-tested.
  */
 enum OverviewStyle {
-    TILES(true),
-    GAUGES(true),
-    COCKPIT(true),
-    RETRO(false),
-    RETRO_ACCENT(true),
-    FUTURISTIC(true),
-    SCIFI(false),
-    CARTOON(false),
-    BLUEPRINT(false),
-    MG(true),
-    MINIMAL(true),
-    TERMINAL(false),
-    AVIATION(false),
-    NIXIE(false),
-    CHRONOGRAPH(true);
+    TILES(true, false),
+    GAUGES(true, false),
+    COCKPIT(true, false),
+    RETRO(true, true),
+    FUTURISTIC(true, false),
+    SCIFI(false, false),
+    CARTOON(false, false),
+    BLUEPRINT(false, false),
+    MG(true, false),
+    MINIMAL(true, false),
+    TERMINAL(true, true),
+    AVIATION(false, false),
+    NIXIE(false, false),
+    CHRONOGRAPH(true, false);
 
     static final String PREF_KEY = "overview_style";
 
-    /** Drawn in the accent colour, so the accent choice changes how it looks. */
     final boolean usesAccent;
+    final boolean hasOriginal;
 
-    OverviewStyle(boolean usesAccent) {
+    OverviewStyle(boolean usesAccent, boolean hasOriginal) {
         this.usesAccent = usesAccent;
+        this.hasOriginal = hasOriginal;
     }
 
-    /** The stored style; "DASHBOARD" (Gauges before 2.22.3) and anything unknown handled. */
+    /** Where the choice between the original palette and the accent colour is kept. */
+    String originalKey() {
+        return "original_colours_" + name();
+    }
+
+    /**
+     * The stored style. Older values: "DASHBOARD" (Gauges before 2.22.3), and "RETRO_ACCENT" /
+     * "TERMINAL_ACCENT" (separate entries before 2.27.2, now the style in the accent colour —
+     * see {@link #wasAccentEntry}). Anything unknown is Tiles.
+     */
     static OverviewStyle fromPref(String stored) {
         if ("DASHBOARD".equals(stored)) return GAUGES;
+        if ("RETRO_ACCENT".equals(stored)) return RETRO;
+        if ("TERMINAL_ACCENT".equals(stored)) return TERMINAL;
         for (OverviewStyle style : values()) {
             if (style.name().equals(stored)) return style;
         }
         return TILES;
     }
+
+    /** A stored value from when the accent-coloured variant was its own entry. */
+    static boolean wasAccentEntry(String stored) {
+        return "RETRO_ACCENT".equals(stored) || "TERMINAL_ACCENT".equals(stored);
+    }
 }