diff --git a/source/src/devtools/ccType/ui-prop.vue b/source/src/devtools/ccType/ui-prop.vue
index f4ef0df..af73f25 100644
--- a/source/src/devtools/ccType/ui-prop.vue
+++ b/source/src/devtools/ccType/ui-prop.vue
@@ -112,7 +112,7 @@ export default class UiProp extends Vue {
 
   colorReverse(OldColorValue: string) {
     OldColorValue = "0x" + OldColorValue.replace(/#/g, "");
-    var str = "000000" + (0xFFFFFF - OldColorValue).toString(16);
+    var str = "000000" + (0xFFFFFF - parseInt(OldColorValue)).toString(16);
     return '#' + str.substring(str.length - 6, str.length);
   }