QmlDesigner.PropertyEditor: Change default editor for color

This template breaks the layout and is currently unusable.
Therefore we replace it by a string editor.

Change-Id: I0818d006a4516f34954d5406ee4074664e909891
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>

share/qtcreator/qmldesigner/propertyEditorQmlSources/PropertyTemplates/TemplateTypes.qml

@@ -22,8 +22,9 @@ AutoTypes {
         typeNames: ["bool", "boolean"]
         sourceFile: "BooleanEditorTemplate.template"
     }
+
     Type {
         typeNames: ["color", "QColor"]
-        sourceFile: "ColorEditorTemplate.template"
+        sourceFile: "StringEditorTemplate.template"
     }
 }