diff -r 25502e6b3e08 -r 2fe85d497e0f QTfrontend/ui/page/pageoptions.cpp
--- a/QTfrontend/ui/page/pageoptions.cpp	Wed Mar 14 11:36:43 2018 -0400
+++ b/QTfrontend/ui/page/pageoptions.cpp	Wed Mar 14 17:50:21 2018 +0100
@@ -999,7 +999,7 @@
         return;
 
     QPalette p = m_colorButtons[i]->palette();
-    QColor c = QColorDialog::getColor(p.color(QPalette::Button), this, QString(), QColorDialog::DontUseNativeDialog);
+    QColor c = QColorDialog::getColor(p.color(QPalette::Button));
 
     if(c.isValid())
     {