I like the colors, but I think the word "doodle" fits well here. It's not really something that you'd want to post -- you're not really asking for critique, and it isn't something that you put realy effort into...You're bound to get negative comments on stuff like this. :/
In my opinion, it really is a nice doodle, but I think you could have done a whole lot better if you made an effort on it. I don't mean to sound rude, but that's just what I can tell by the fact that you said you only spent five minutes on it, and that it doesn't look like you cared how it came out anyway.
