I'm thinking red box with white lettering as it's the same as the nameplate on the card back although I like the white box with red lettering for some reason, maybe because R5 is mainly white with some red on him.
Thanks chaps - I ended up subbing a variety of colour combinations to different sites.
Qwertee is the first place to put it up for voting (in the original black and white).
Any chance of some sneaky votes?
http://www.qwertee.com/product/bad-motivator-1/