UI: Fix toolbutton colour in Yami

UI/data/themes/Yami.qss

@@ -416,7 +416,7 @@ QToolBar {
 
 QPushButton[toolButton="true"],
 QToolButton {
-    background-color: rgb(160,64,75);
+    background-color: rgb(60,64,75);
     padding: 4px 6px;
     margin: 0px 2px;
     border-radius: 2px;