diff --git a/src/components/DevTools.js b/src/components/DevTools.js
index 94ab46b2..5999243d 100644
--- a/src/components/DevTools.js
+++ b/src/components/DevTools.js
@@ -40,6 +40,7 @@ type HslColor = {
 type ColorType = {
   name: string,
   val: string,
+  isDark: boolean,
   color: {
     isDark: () => boolean,
     hsl: () => HslColor,