How about a ghost flame look to it? Something like white and metallic blue flames really light on there and blend the white to blue or blue fade to white (either way). I have always wanted to do that to something of mine with that color combo.... The orange, red and yellow and white and all those colors are too overrated now, that's all you see. I would try to be different if I were you... you already got a start with that wagon, not like you see those things all the time so you might as well make the paint job something different as well.