Fast forward a whole year and voila! I finally painted the inside of the shell a golden shade.
I found the paint, Liquid Leaf, at my local Ace Hardware.
I taped the edges and went to town painting the shell's inside. I love the golden glow of the painted shell.
I added some sea glass and bleached starfish to the shell, and I think it looks great at the base of the parlor mantle.
Gilded shell, y'all!