Wow, it looks great!
As for the logo colours, you should just pull those right from the background (ie, the gray from the left side and the red from his sweater). It may make the whole thing look a little more unified......just a suggestion.
I think the same outline would look good with a black center, considering the color is similiar or the same to that of the shirt, and that looks cool because there is a lack of red. When you coordinate two things to be a color that takes up a minority of room, it almost always looks good. I don't know, but I like the redishs outline.
D'aww, Emo Boy is so freakin' cute, and no, I will never stop saying that,
Love the colours on this. And the sky. And the angle on the house. I am instantly envious of anyone who can draw buildings. You building-drawer, you.
I love that he's holding the grass, possibly because I am a crazy person.