add color to domProps (#871)

Author: tatchi

src/ReactDOM.re

@@ -1066,6 +1066,8 @@ type domProps = {
   [@mel.optional]
   clipRule: option(string),
   [@mel.optional]
+  color: option(string),
+  [@mel.optional]
   colorInterpolation: option(string),
   [@mel.optional]
   colorInterpolationFilters: option(string),

src/ReactDOM.rei

@@ -1067,6 +1067,8 @@ type domProps = {
   [@mel.optional]
   clipRule: option(string),
   [@mel.optional]
+  color: option(string),
+  [@mel.optional]
   colorInterpolation: option(string),
   [@mel.optional]
   colorInterpolationFilters: option(string),