
I don't know much about acrylic vs. Lexan, other than Lexan is supposed to be stronger. But it's just a dome light. Whatever looks best works for me!

As for the blasting, I'm personally for *some* form of blasting as opposed to a clear lense in which you see the bulb. While that would look fine, too, I think a white/translucent lense would look sweet. Too bad you couldn't get ahold of some kind of white translucent acrylic... then you wouldn't have had to blast anything. That being said, if it can be a clean white over the brownish/tinted color, that would look the best.
Just my

PS... I know I'm in the top 10-20, so just let me know when you need the $$