Google for your closest TAP Plastics store. They have scraps in all colors
of the rainbow.

Jim

--
"It is the mark of an educated mind to be able to entertain a thought
without accepting it."
--Aristotle



I bought some 12" x 24" pieces of plexiglass in red, yellow and green on
e-bay a few years ago. The local glass supply here will only order in 4' x
8' sheets and rarely have smaller pieces for sale.

Dan, U.S. Air Force, retired