In the glass container, add one drop of food coloring to approximately one tablespoon of tacky glue. Note: You can adjust the color of your sea glass from light to dark, or somewhere in between, by adjusting the amount of food coloring you use in the mixture.
Mix the glue and food coloring until combined. In the glass container, add one drop of food coloring to approximately one tablespoon of tacky glue.
Cut off a smaller section of the sponge to use for applying the colored glue mix.
Dip the smaller sponge piece into the colored glue mix and dab it onto the glass container.
Completely cover the surface of the glass container. Let dry. Note: You can achieve a different look with heavier or lighter applications.
Apply gold marker to the top edge of the glass. Let dry.