here are the acrylics list. It was compiled by ralph of ben cut laser but I have done several and found the list to be true.
The 4 digit numbers are the ePlastics Reference Numbers
ORANGE 2422 - Can cut in 4 passes.
Light Purple 1020 - Cannot cut.
Dark Purple 3730 - Cannot cut.
RED 2423 - Can cut in 3 passes.
DARK GREEN 2092 - Can cut in 3 passes.
Light Green 2111 - Cannot cut.
Glass Green 3030 - Cannot cut.
Dark Blue 2424 - Cannot cut.
Light Blue 2069 - Cannot cut.
Yellow 2208 - Can cut in 3 passes.
Now there may be ways around the ones that are listed as cannot cut. Paint on the surface or nail polish could change that. I'll have to try it.