There were (to my knowledge) a total of 3 colors of the Wynn deck that were legitimately printed - Red, Blue (Purple), and Brown. The Red and Blue versions were the more common, easier to find versions. Brown was harder to find, and theory11 picked up a large lot of them and offered them here. The Purple version is called Blue by some people, Violet by others, Purple by others, but those are the same decks.
The Common Colors
Beyond these two colors, and the Brown version, there aren't legitimate other colors in this design that I am aware of. I have seen Green in fakes, and I have seen Black in fakes. I do believe that other colors exist in the newer designs, but not in this older design.
Wynns were once thought by some people to be the next Jerry's Nugget deck. The bright, solid color with a simple logo makes sense for that, these cards look great for flourishing. They also handle well. That said, there isn't so much more than that. They aren't super unique, they are really just above average. They were also discontinued, and were harder to obtain than many decks.
I hope this helps!
// L