How to make rainbow fire pumpkins!Esther Inglis-Arkell10/29/13 6:40pmFiled to: experimentsfirerainbow flamespumpkinshalloweenscience2210EditPromoteShare to KinjaToggle Conversation toolsGo to permalink Now is the time to gather the materials to make rainbow fire pumpkins. They're both creepy and festive.So you've decided against nuts as your primary light source for this Halloween. That's fair. Maybe instead, you could try something different with your jack-o-lantern. Get some drugstore materials and turn it into a rainbow flaming pumpkin of horror.