Changed processing of a wxEVT_SYS_COLOUR_CHANGED event.

Only UI is updated. The application doesn't recreated now

src/slic3r/GUI/Search.hpp

@@ -198,6 +198,7 @@ public:
 
 protected:
     void on_dpi_changed(const wxRect& suggested_rect) override;
+    virtual void on_sys_color_changed() override;
 };