How to make RAINBOW JELLO?!?

make jello like usual but if you can find a jello mold of you choice and its plastic try cutting the sides and pushing a Styrofoam plate in the groove. do this up the jello mold and put your jello mold in each section and when its done, pull out the plates and the jello should stack on top of eachother pu tit in the fridge for some more time and they should be able to harden together.