Colored bottom on acrylic tank?

[Treehrtsme]

Has anyone ever made an acrylic tank with a bottom colored anything aside from the standard black clear white or blue? I have some spare sheets laying around solid orange, fluorescent orange, solid yellow etc. I was wondering if anyone had ever experimented with using other colors of acrylic on display tanks?

After seeing the deskmate come out it got me wondering

 

[Kmarshall168]

I think the only thing I have ever seen is white bottom to reflect light for a frag tank