Changing plasma theme

[Jeremy Sanders]

Kevin Kofler wrote:

> If you just want to change the Plasma theme, you just have to right-click
> on your desktop and choose "Appearance settings" in the menu.

Ah - that seemed to do something. I'm not sure what the advanced dialog 
does, then. It doesn't seem to have any effect. Is it simply for installing 
themes?

However, it's also unclear why black themes like "Oxygen" now appear to be 
blue-green when enabled - at least my panel is blue-green. In the Appearance 
Settings dialog they still appear to be black. The preview doesn't match the 
outcome at all.

Jeremy