diff --git a/formspec.lua b/formspec.lua
index bd10cee..2c924cf 100644
--- a/formspec.lua
+++ b/formspec.lua
@@ -269,7 +269,7 @@ function gui.inventory(args)
         end
     end
 
-    data = data .. string.format("list[%s;%s;%f,%f;%f,%f;]",
+    data = data .. string.format("listcolors[#00000000;#00000022] list[%s;%s;%f,%f;%f,%f;]",
                                   args.location, args.id,
                                   args.x or 0, args.y or 0,
                                   args.w, args.h);