add comment about special logic to consider values colorscales in sunburst and treemap

Author: archmoj

src/traces/sunburst/defaults.js

@@ -44,7 +44,10 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
     if(lineWidth) coerce('marker.line.color', layout.paper_bgcolor);
 
     coerce('marker.colors');
-    var withColorscale = traceOut._hasColorscale = (traceIn.marker || {}).coloraxis || hasColorscale(traceIn, 'marker', 'colors');
+    var withColorscale = traceOut._hasColorscale = (
+        hasColorscale(traceIn, 'marker', 'colors') ||
+        (traceIn.marker || {}).coloraxis // N.B. special logic to consider "values" colorscales
+    );
     if(withColorscale) {
         colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: 'marker.', cLetter: 'c'});
     }

src/traces/treemap/defaults.js

@@ -73,7 +73,10 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
     if(lineWidth) coerce('marker.line.color', layout.paper_bgcolor);
 
     var colors = coerce('marker.colors');
-    var withColorscale = traceOut._hasColorscale = (traceIn.marker || {}).coloraxis || hasColorscale(traceIn, 'marker', 'colors');
+    var withColorscale = traceOut._hasColorscale = (
+        hasColorscale(traceIn, 'marker', 'colors') ||
+        (traceIn.marker || {}).coloraxis // N.B. special logic to consider "values" colorscales
+    );
     if(withColorscale) {
         colorscaleDefaults(traceIn, traceOut, layout, coerce, {prefix: 'marker.', cLetter: 'c'});
     } else {