Mix Elmer’s glue with food coloring and paint it on to any glass to make it look like sea glass when dry. In a bowl, you will want to add one teaspoon of glue, three drops of food coloring and 1 1/2 teaspoons of water .. These look really nice with candles, or electric candles, glow sticks ect inside them :) ~Frisky
Remember the Mod Podge + food coloring technique for painting clear glass? That was cool and all, but I spotted another method using Vitrail glass paint and acetone (nail polish remover) that allows the bottles and jars to be used as actual vases, as the finish is waterproof! This treatment provides for more depth of color as well.
DIY Beach Glass Directions: 1) Start with clean, dry glass bottles and jars and prepare your workspace. 2) Mix the school glue and water as if you were making homemade mod podge. Just mix 2-3 parts glue to 1 part water. 3) Add a few drops of blue and green food coloring. Add more blue or green depending on your preference. Add just a little dish liquid.