Its all well if you know how to write css and php. You can get a limited idea from a bit of common sense but to actually do anything beyond change a few of the colours and your a bit stuffed. If you could comment the php and css files more it would be a huge help to a lot of us!
I know a video for v2 is pointless but if you have any time for a tutorial for v3 it would be appreciated! I'm not sure though if a written tutorial may be more helpful as it easier to work through.