this is a signature of my favorite webcomic/graphic novell: Last Blood the guy is called Math http://www.lastblood.net/
The colors seem a bit too strong. I'd tone them down in opacity or try another blending mode. Other than that I love it.
glad you like it guys and the color, well it's a BW comic so it's improvising all the way lol @morv's comment btw, you rock man