Make QML color validation code reusable.

Reviewed-by: ckamm

src/libs/qmljs/qmljscheck.h

@@ -37,6 +37,7 @@
 #include <qmljs/parser/qmljsastvisitor_p.h>
 
 #include <QtCore/QCoreApplication>
+#include <QtGui/QColor>
 
 namespace QmlJS {
 
@@ -80,6 +81,8 @@ private:
     bool _ignoreTypeErrors;
 };
 
+QMLJS_EXPORT QColor toQColor(const QString &qmlColorString);
+
 } // namespace QmlJS
 
 #endif // QMLJSCHECK_H