NOISSUE add hack for system themes. Maybe it works?

application/themes/ITheme.h

@@ -2,14 +2,18 @@
 #include <QString>
 #include <QPalette>
 
+class QStyle;
+
 class ITheme
 {
 public:
 	virtual ~ITheme() {}
 	virtual QString id() = 0;
 	virtual QString name() = 0;
+	virtual bool hasStyleSheet() = 0;
 	virtual QString appStyleSheet() = 0;
 	virtual QString qtTheme() = 0;
+	virtual bool hasColorScheme() = 0;
 	virtual QPalette colorScheme() = 0;
 	virtual QColor fadeColor() = 0;
 	virtual double fadeAmount() = 0;