Add fix for Dolphin folder background colour

Fixes the Dolphin folder background colour to match the rest of the QT
theming - otherwise you get a white background when you expect a dark
one.

.config/kdeglobals

@@ -3,3 +3,7 @@ Dialog Size=632,480
 
 [General]
 BrowserApplication[$e]=!firefox
+
+# Fix Konsole folder background colour
+[Colors:View]
+BackgroundNormal=23,24,24