One thing to note is that Widower's Wood makes use of the different colored plastic used for the minis. If you paint them up, you need to have a way to tell them apart.
I've seen people paint the bases in bright colors, or paint the whole minis in red or blue, but I prefer a more subtle approach. There are marks on the bases that I painted in red or blue, and I found places on the minis to express these colors as well (feathers, or the fade on the back fins and such).
Well, here they are:
