diff --git a/colors/colors.d.ts b/colors/colors.d.ts
index c87112d7c4..e6056b3540 100644
--- a/colors/colors.d.ts
+++ b/colors/colors.d.ts
@@ -3,6 +3,10 @@
 // Definitions by: Bart van der Schoor <https://github.com/Bartvds>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
 
+declare module "colors" {
+    export function setTheme(theme:any):any;
+}
+
 interface String {
     bold:string;
     italic:string;