fix colorbar templating for "non-root" colorscales

- propagate template info into colorscale container - fix marker_colorscale_template baseline which was botched from 6a47d66
plotly · etpinard · Jan 7, 2020 · Jan 7, 2020 · Jan 7, 2020 · Jan 7, 2020
commit 6942b1003b9eebfb27ecf77c64e3fd0b8a1f759b
diff --git a/src/components/colorscale/defaults.js b/src/components/colorscale/defaults.js
@@ -115,6 +115,9 @@ module.exports = function colorScaleDefaults(parentContIn, parentContOut, layout
         if(prefix && inTrace) showScaleDflt = hasColorbar(containerIn);
 
         var showScale = coerce(prefix + 'showscale', showScaleDflt);
-        if(showScale) colorbarDefaults(containerIn, containerOut, layout);
+        if(showScale) {
+            if(prefix && template) containerOut._template = template;
+            colorbarDefaults(containerIn, containerOut, layout);
+        }
     }
 };
diff --git a/test/image/baselines/marker_colorscale_template.png b/test/image/baselines/marker_colorscale_template.png