Seriously, it's probably easiest to go get single polyhedrals that are the correct colors. It cost me a whole $5, and made the game go much quicker.
Just remember 4, 6, 8, 10, 12. Count by twos. No Mnemonic needed really.
Yup. But, I can't wait to see what the odd numbers are going to be on the official levs colored d12s. Do they go up or down on certain numbers, I wonder?