Well I don't color almost everything necessarily in my sketchbook, but every few pages I'll have something colored. xD It helps me visualize a final product if I ever wanted to go full-blown art piece on a sketch.
Holly Crap Kir! Even your sketches are so damn epic!! C8 I mean it, your SO AMAZING! x3 why can't i just have your amazing talent?! your just THAT good Also I kinda laughed at the Once-ler singing 'I see the light' XD