Merge pull request #5304 from evanvosberg/master

Add non-standard property for supporting Safari mask-icon.
(cherry picked from commit 2c176da7e8)

src/renderers/dom/shared/HTMLDOMPropertyConfig.js

@@ -192,6 +192,8 @@ var HTMLDOMPropertyConfig = {
     autoCorrect: null,
     // autoSave allows WebKit/Blink to persist values of input fields on page reloads
     autoSave: null,
+    // color is for Safari mask-icon link
+    color: null,
     // itemProp, itemScope, itemType are for
     // Microdata support. See http://schema.org/docs/gs.html
     itemProp: MUST_USE_ATTRIBUTE,