The borders of each sticker are the color in question so it's always obvious which die you have. Or I could paint it. Or alternately order dice of that color.
The card faces should be cropped to what's relevant and then a custom cs plugin should pentagonize them and add borders.
I can write a PHP + GD script to stick them all onto a single printable page.
They should be printed ideally on sticky paper so I'll need a printer, or could alternately print them at the library and glue them on.
Pentacles should have green (or whatever color that die is) pentacles superimposed on the images for flavor since d12s are pentagonal anyway.