A quick update on the progress of my Ork infestation. After a few delays, I've managed to get the basic colours on 5 of da boyz. I got distracted and started messing with the skin colour, but managed to stop myself after putting a wash on the first one.
As a side note, I take a slightly different approach when undercoating character models. I prime the models grey, then put a black wash over the entire model. This picks out all the details quite nicely so I can paint the details more carefully.