If I had a pool I would totally try this out. Put a glow stick in a balloon for pool lanterns. Pool party on a Summer night! I think this could work pinned up on the fence of a backyard without a pool, too, so really great idea for any outdoor BBQ/party!
Create an inexpensive and easy centerpiece using food coloring and simple white flowers in bud vases. I like the idea of the colored water with maybe white roses and the colors of the water would be the colors of the wedding