Yeah I despised computer colouring when it first appeared, especially the gradients where it looked most digital, though it didn't bother me so much in American comics where it was kept simpler. Esquerra's cloning, photos and 3D experiments were pretty bad, and even much later I find he uses the burn tool/shading far too strongly, However, it's not so bad now...and I think together with his son's contribution he's producing some of his best work (I actually like the inking it a bit neater and less rushed, and this way he keeps it all in the family.)
Personally, I think good colouring should look like very good hand colouring, and all on the same page. To this end, I now have a scan of a blank page, complete with a bit of grain and texture, to put over the top of the art to make it look a bit more like it's done with volatile materials.