Thanks for all your replys, the onpy good lee filter mod ive gotten from GB was like a plague teal color, it was kinda cool though, i find i have to add too much dark filter to get purple and you lose alot of light. I will continue to experement.
Oh yeah! forgot about the teal. But yeah that really is pretty much it, from what I have found.
But yes, please share if you make anymore discoveries!!