I talked to them about it and there are actually 5 different colors, yellow, purple, and 3 varieties of bicolor although I was told 2 of the bicolors are very similar. I passed on the bicolors since I already have some nice lavender/green tips I got from chelskisw6 but I ordered a yellow and a purple. I'll let you know how they look when I get them. Roe's Duncans typically have smaller polyps than most and the pics seem to reinforce that. We'll see.
Tyke