diff --git a/tt1-blocks/experimental-theme.json b/tt1-blocks/experimental-theme.json
index 5af2650b..125b0194 100644
--- a/tt1-blocks/experimental-theme.json
+++ b/tt1-blocks/experimental-theme.json
@@ -6,12 +6,12 @@
 					{
 						"slug": "black",
 						"color": "#000000",
-						"name": "Black"
+						"name": "_x( Black, Color name )"
 					},
 					{
 						"slug": "dark-gray",
 						"color": "#28303D",
-						"name": "Dark Gray"
+						"name": "_x( Dark Gray, Color name )"
 					},
 					{
 						"slug": "gray",