QmlDesigner.propertyEditor: fix for alpha == 0

"transparent" is an extra case.

Task-Number: QTCREATORBUG-5727
Change-Id: If28e8735aacb3dd464b61fb7ed65918d8ea465b2
Reviewed-on: http://codereview.qt.nokia.com/2627


Reviewed-by: Marco Bubke <marco.bubke@nokia.com>

src/plugins/qmldesigner/components/propertyeditor/propertyeditorvalue.cpp

@@ -110,7 +110,7 @@ static void fixAmbigousColorNames(const QmlDesigner::ModelNode &modelNode, const
             color = QColor(color.name());
             color.setAlpha(alpha);
             *value = color;
-        } else {
+        } else if (value->toString() != QLatin1String("transparent")) {
             *value = QColor(value->toString()).name();
         }
     }