Becca,
All throughout the Starboard thread people make reference to using table saws w/ plastic cutting blades. So I have not doubt you could get it done...somewhere....
As far as where to get from....
Here is probably where I will be going. Usplastic.com also has cutting boards, but not in different colors. And I think I like the black best...will match the black back of the tank better.
HTH
Nick