Move 'editor-colors' to wrapper view to support padding on mini editors

src/editor-component.coffee

@@ -87,7 +87,7 @@ EditorComponent = React.createClass
 
       style.height = scrollViewHeight if @autoHeight
 
-    className = 'editor-contents editor-colors'
+    className = 'editor-contents'
     className += ' is-focused' if focused
     className += ' has-selection' if hasSelection
 

src/react-editor-view.coffee

@@ -9,7 +9,7 @@ module.exports =
 class ReactEditorView extends View
   @content: (params) ->
     attributes = params.attributes ? {}
-    attributes.class = 'editor react'
+    attributes.class = 'editor react editor-colors'
     @div attributes
 
   focusOnAttach: false