they have a stable burgundy 7 pot.....
Hmm, well I wonder if it's multiple genes then. The genes of capsicum paper does indicate that there are a number of genes related to "red hue" so it may be more complicated than what I said above. If the burgundy color in the 7 pot is the same as the Madballz then armac is prob correct in that stability will eventually arise by self pollinating peppers and keeping separate color seed stock.
Im growing several of these now, I'll be interested to see my pod color, I like the burgundy I hope that's what I get.