I couldn't really see how this was that unique. You do do a good job of using the same color. I'm saying this because it isn't just the color blue. You also show good strokes with the people depicted here. I don't think I've ever seen a black clown. I should have known this was going to be a contest entry.
I can pretty much guarantee that it's always going to be one. I think the hair comes off as pretty blue here. I imagine the color is supposed to reflect the mood of the band. I wish they were as happy as the balloon. I wonder what the biggest balloon is?