Recipe from Momofukufor2's Rainbow Jello!
Make sure you plan ahead.
If you want to get them out of the little dishes just place them carefully in a shallow pan of warm water and they will loosen up and come free.
You can also spray the pan or glasses with non stick spray if you like.
You can leave out the milky portion. I did two with the milky portion and then a bunch of little glasses with just straight up Jello.
I would be more careful about the colours you layer than I was if you make it with straight up jello. I put the green and yellow next to each other and there wasn't enough contrast for my liking so think about which ones you want where before making it.