Neat choice of material.
If you want a cheap way to nicely color your PVC, you can boil it in RIT fabric dye (or warm it with a slight amount of acetone. For more vibrant colors, you can follow something like this:
Stain PVC Any Color You Like | MAKE
It's really down to luck as there's barely any quality control on these. Mine came in overspec but died after only minutes of operation (on 15s intervals).