Alright, I
think this one works for all BossMedia skins. I use partially transparent pngs, so the background doesn't matter.
However, you might run into problems with the period (decimal point), as the transparency trick doesn't work here (can't make the background transparent, as it then would match all over the place...). I tested on Celeb with the decimal point image from Fortune and it works (due to shades of variation option), but I can't be sure it will work with every background.
BetPotBossMedia