"Glow" was the 2nd 6"x 6" I painted after returning to Texas.  I have a collection of various kinds and colors and shapes of bottles. I collect them from antique shops, junk shops, garage sales, and ancient trash piles. Jim brought a wonderful black wine bottle from Russia some years ago.  It sits in a special place awaiting it's turn to step up to the block and be painted.  I occasionally even purchase new ones. They all catch light, reflect light, refract light, and cast a marvelous glow of color on their surroundings as well as cast shadows.