I can see why this is confusing for multiple reasons!
So your Active Party Member has a bunch of symbols beneath it. They correspond to different dice, which are also colored on the right side. So if you see a white, blue, and blue - that means the dice this monster uses is a white die, a blue die, and a blue die.
Does that make sense?
So the card backs correspond to the dice that match (e.g. green back = green card). Since they're to match dice, you'd print out 6 cards for each die because there are 6 sides on a die. The difference of the pancake backs and blank backs is so you could separate your cards from the monster cards.
If you look at the single sheets, you'll see the distribution of faces to the backs.
