feat(icon-color): add icon color clear button (#3593)

packages/translation/src/lang/en.json

@@ -2556,6 +2556,9 @@
       "iconColor": {
         "label": "Icon color"
       },
+      "clearColor": {
+        "label": "Clear color"
+      },
       "customCss": {
         "label": "Custom css for this board",
         "description": "Further, customize your dashboard using CSS, only recommended for experienced users",