diff --git a/mods/cnc/rules/system.yaml b/mods/cnc/rules/system.yaml
index c327250b94..621d9446fb 100644
--- a/mods/cnc/rules/system.yaml
+++ b/mods/cnc/rules/system.yaml
@@ -224,6 +224,7 @@ World:
 		Name: chrome
 		Filename: temperat.pal
 		ShadowIndex: 3
+		AllowModifiers: false
 	PaletteFromFile@effect:
 		Name: effect
 		Filename: temperat.pal
diff --git a/mods/d2k/rules/system.yaml b/mods/d2k/rules/system.yaml
index b28edbe79c..95aea4af8d 100644
--- a/mods/d2k/rules/system.yaml
+++ b/mods/d2k/rules/system.yaml
@@ -297,6 +297,7 @@ World:
 		Name: chrome
 		Filename: d2k.pal
 		ShadowIndex: 3
+		AllowModifiers: false
 	PaletteFromFile@effect:
 		Name: effect
 		Filename: d2k.pal
diff --git a/mods/ra/rules/system.yaml b/mods/ra/rules/system.yaml
index 3d946f1952..a488151cf4 100644
--- a/mods/ra/rules/system.yaml
+++ b/mods/ra/rules/system.yaml
@@ -535,6 +535,7 @@ World:
 		Name: chrome
 		Filename: temperat.pal
 		ShadowIndex: 3
+		AllowModifiers: false
 	PaletteFromFile@effect:
 		Name: effect
 		Filename: temperat.pal