Not sure what "fluorescent colored" would be ??
They do make plexi in a variety of tints, might be hard/expensive to get ahold of.
I have a plexi shop around me thats about a 40 mile round trip, worth it if I was to get a whole sheet of it, but not for a little chunk. Ordering online, I'd get raped by shipping. So while I generally could cut into anything for custom work, the buyer would have to foot the costs.
A couple folks have asked, to clarify, I have 3 prototypes left for $25 each shipped.
The 2 painted ones, and the TG logo outline one.