We doing unity sand instead of the candle. But i don't know how much sand i will need?? Using a mason jar as our holder. will 1lb of ea color do fine??? 3 colors of sand.. THANKS! Unsure if we will be using a lot of 1 color or not. 1 color may be used just as the base (bottom color) OR our kids will be participating. His kids are not as outgoing infront of crowds like my duahgter is. My daughter would do the sand in a heart beat but his kids...ehhh...not sure. We have to talk to them and find out. But will still be doing 3 colors either way. THANKS!!