diff -r ea2a1436cdd3 -r 1f0e8a144bad QTfrontend/res/css/qt.css
--- a/QTfrontend/res/css/qt.css	Sun May 05 15:05:48 2019 +0200
+++ b/QTfrontend/res/css/qt.css	Sun May 05 15:24:19 2019 +0200
@@ -191,13 +191,14 @@
 border-right-width: 1px;
 border-top-width: 0;
 border-bottom-width: 0px;
-border-color: #001d10;
+border-color: #005F35;
 border-style: solid;
 background-color: #00351d;
 padding: 4px;
 }
 QHeaderView::section:pressed {
-background-color: #00250d;
+background-color: #005A33;
+border-color: #FFFFFF;
 }
 QHeaderView::up-arrow {
 image: url(":/res/sort_up.png");