I had no idea what I wanted to color but I wanted to color something. Then I saw THIS by ambris on DA and knew that was the one. So that's my line art used for the image (obviously x-x ) because I could not in no way resist coloring that.

I tried to stay true to the sketch (even keeping the line-art the same color instead of darkening it) which wasn't hard since I made no alterations other than to clean up some dust speckles. I also wanted to color to compliment both the character and the artist's line art.