diff --git a/src/game/engine/scenes/tests/city_proof.gd b/src/game/engine/scenes/tests/city_proof.gd
index 46f0bf49..76de9fe3 100644
--- a/src/game/engine/scenes/tests/city_proof.gd
+++ b/src/game/engine/scenes/tests/city_proof.gd
@@ -21,28 +21,8 @@ const WATER_BIOMES: Dictionary = {
 	"ocean": true, "deep_ocean": true, "coast": true, "inland_sea": true, "lake": true,
 }
 
-const TERRAIN_COLORS: Dictionary = {
-	"ocean": Color(0.05, 0.10, 0.35),
-	"deep_ocean": Color(0.02, 0.05, 0.25),
-	"coast": Color(0.25, 0.45, 0.75),
-	"lake": Color(0.15, 0.65, 0.75),
-	"inland_sea": Color(0.10, 0.30, 0.60),
-	"grassland": Color(0.30, 0.65, 0.20),
-	"plains": Color(0.60, 0.70, 0.25),
-	"forest": Color(0.10, 0.40, 0.10),
-	"jungle": Color(0.20, 0.70, 0.15),
-	"boreal_forest": Color(0.15, 0.40, 0.35),
-	"enchanted_forest": Color(0.30, 0.55, 0.60),
-	"desert": Color(0.85, 0.75, 0.40),
-	"tundra": Color(0.70, 0.75, 0.72),
-	"snow": Color(0.92, 0.94, 0.96),
-	"ice": Color(0.80, 0.88, 0.95),
-	"mountains": Color(0.45, 0.42, 0.40),
-	"hills": Color(0.55, 0.45, 0.30),
-	"swamp": Color(0.30, 0.35, 0.15),
-	"volcano": Color(0.75, 0.15, 0.10),
-	"land": Color(0.50, 0.50, 0.30),
-}
+## Biome colour comes from the single source (biome_colors.json) via
+## DataLoader.get_biome_color() — no local palette copy (p2-87).
 
 var _game_map: RefCounted = null
 var _player: RefCounted = null
@@ -203,7 +183,7 @@ func _draw_map_panel(px: float) -> void:
 		if offset.x & 1:
 			y += CELL_H * 0.5
 
-		var base: Color = TERRAIN_COLORS.get(tile.biome_id, Color(0.5, 0.0, 0.5))
+		var base: Color = DataLoader.get_biome_color(tile.biome_id)
 		draw_rect(Rect2(x, y, CELL_W - 1, CELL_H - 1), base)
 
 		if pos in owned:
diff --git a/src/game/engine/scenes/tests/world_gen_lab/world_gen_lab_proof.gd b/src/game/engine/scenes/tests/world_gen_lab/world_gen_lab_proof.gd
index 7b4cfbc5..701ff316 100644
--- a/src/game/engine/scenes/tests/world_gen_lab/world_gen_lab_proof.gd
+++ b/src/game/engine/scenes/tests/world_gen_lab/world_gen_lab_proof.gd
@@ -12,28 +12,8 @@ const CELL_H: int = 10
 const MARGIN: Vector2i = Vector2i(20, 40)
 const OUTPUT_DIR: String = "user://screenshots/world_gen_lab"
 
-const TERRAIN_COLORS: Dictionary = {
-	"ocean": Color(0.05, 0.10, 0.35),
-	"deep_ocean": Color(0.02, 0.05, 0.25),
-	"coast": Color(0.25, 0.45, 0.75),
-	"lake": Color(0.15, 0.65, 0.75),
-	"inland_sea": Color(0.10, 0.30, 0.60),
-	"grassland": Color(0.30, 0.65, 0.20),
-	"plains": Color(0.60, 0.70, 0.25),
-	"forest": Color(0.10, 0.40, 0.10),
-	"jungle": Color(0.20, 0.70, 0.15),
-	"boreal_forest": Color(0.15, 0.40, 0.35),
-	"enchanted_forest": Color(0.30, 0.55, 0.60),
-	"desert": Color(0.85, 0.75, 0.40),
-	"tundra": Color(0.70, 0.75, 0.72),
-	"snow": Color(0.92, 0.94, 0.96),
-	"ice": Color(0.80, 0.88, 0.95),
-	"mountains": Color(0.45, 0.42, 0.40),
-	"hills": Color(0.55, 0.45, 0.30),
-	"swamp": Color(0.30, 0.35, 0.15),
-	"volcano": Color(0.75, 0.15, 0.10),
-	"land": Color(0.50, 0.50, 0.30),
-}
+## Biome colour comes from the single source (biome_colors.json) via
+## DataLoader.get_biome_color() — no local palette copy (p2-87).
 
 var _game_map: RefCounted = null
 var _captured: bool = false
@@ -108,7 +88,7 @@ func _draw() -> void:
 		if offset.x & 1:
 			y += CELL_H * 0.5
 		draw_rect(Rect2(x, y, CELL_W - 1, CELL_H - 1),
-			TERRAIN_COLORS.get(tile.biome_id, Color(0.5, 0.0, 0.5)))
+			DataLoader.get_biome_color(tile.biome_id))
 		if not tile.river_edges.is_empty():
 			draw_rect(Rect2(x + CELL_W * 0.3, y + CELL_H * 0.3, 2, 2),
 				Color(0.3, 0.6, 1.0))