I know that white blades and purple filters work... with less brightness. I've also seen the leds with 3 colors (including blue and red obviously) and 4 colored ones (again, red and blue) from the website that sells the rebel leds. While I'm partially... well... partial, to having the blade be able to switch between this purple and a red one, if its easiest to only have one color of these two then purple will most likely be my priority :P. So, help a noob out, what do people recomend for purple?

*Note I have been doing a lot of research over the past few months about this project I've embarked on. Only reason I say this, its a common response I get here :P but seriously I have an... admittedly not final but existent idea of what I'm going for