I will echo what Illyiss said and get a diamond or emerald controller. In there I got a nice purple going B=128 R=25.
Thanks for sharing the values. Is it safe to assume that G=0?
This is essential half the values of the BVA, but because it is dimmer it doesn't wash out the color. It is a nice, rich color with out too much red or blue. I'm planning (pending approval from the principal) on starting a "Star Wars" club at our school. With our colors being purple and silver, I plan on using that LED mix for my blade.
Oh, and if you have your FoC color be silver (white), that would be really cool! or maybe mix it in as an idle effect? VERY good thinking there!