I seriously dislike the use of computer coloration in "mainstream" American comic books. While it may make a mediocre artist look great (*cough*Greg Land*cough*), it also manages to muddle the art of a pretty good artist. I'm thinking mostly about Jae Lee's art in Stephen King's Dark Tower (Marvel Comics). He may be a conventional illustrator, but what he can do with a very thick black line is amazing. Which is sad, because you can't really see it under Richard Isanove's gazillion of Photoshop-induced layers and filters.

I mean, just look at the drapery shown here:
Now, imagine the original illustration in black and white. Even without the airbrush effect, there is still a sense of depth in the illustration, despite the fact that Jae Lee doesn't use ink washes to simulate shadows.

And yes, Jae Lee can work very well with colorists. Just have a look at his work with Jose Villarubia on Hellshock (yes, yes, I know, the title is silly. It was the 1990s, after all).