diff --git a/mods/ts/rules/defaults.yaml b/mods/ts/rules/defaults.yaml
index a50fedd8ec..893d638b62 100644
--- a/mods/ts/rules/defaults.yaml
+++ b/mods/ts/rules/defaults.yaml
@@ -553,6 +553,8 @@
 		Footprint: x
 		Dimensions: 1, 1
 	AppearsOnRadar:
+	RadarColorFromTerrain:
+		Terrain: Rock
 	BodyOrientation:
 		UseClassicPerspectiveFudge: False
 	Tooltip:
diff --git a/mods/ts/tilesets/snow.yaml b/mods/ts/tilesets/snow.yaml
index a1740d0613..e2ae5926fe 100644
--- a/mods/ts/tilesets/snow.yaml
+++ b/mods/ts/tilesets/snow.yaml
@@ -59,6 +59,10 @@ Terrain:
 		Type: Tree
 		TargetTypes: Ground
 		Color: 255,28,32,36
+	TerrainType@Rock:
+		Type: Rock
+		TargetTypes: Ground
+		Color: 255,68,68,60
 
 # Automatically generated. DO NOT EDIT!
 Templates:
diff --git a/mods/ts/tilesets/temperate.yaml b/mods/ts/tilesets/temperate.yaml
index d256f0ad10..260d08f338 100644
--- a/mods/ts/tilesets/temperate.yaml
+++ b/mods/ts/tilesets/temperate.yaml
@@ -59,6 +59,10 @@ Terrain:
 		Type: Tree
 		TargetTypes: Ground
 		Color: 255,28,32,36
+	TerrainType@Rock:
+		Type: Rock
+		TargetTypes: Ground
+		Color: 255,68,68,60
 
 # Automatically generated. DO NOT EDIT!
 Templates: