this is done for the next update.
Its set in the Player preferences panel and for now its labelled "use flat layout"
its fairly similar to the graphit skin layout but the spectrum visualiser isnt available
The default settings work for a number of the skins but there are some skins that probably need the author to override the default settings.
I think it gives a clean and modern look, but it probably works best when the player panel is docked on the bottom and you set a larger font for the player text
I will post a link later