a little tiphave the line art on a layer and make a layer underneath it with the colours on it. change the line art layer to multiply and you'll get something similar to this.
www2.b3ta.com/host/creative/15759/1224588022/walker2.gif
(www2.b3ta.com/host/creative/15759/1224588022/walker2.gif
Aphex The Mink Snackless,
Tue 21 Oct 2008, 12:21,
archived)