So what exactly are we looking at here? It's a lamp that turns on and off by sticking your hand in the center. Duh. And if you think that is cool, it quickly flashes blue when turning on or off, then begins to steadily cycle through a range of colors in response to ambient sounds. The effect is mesmerizing and beautiful while also producing a comfortable glow for any room. Light effect is produced by chip controlled LED's. Made of pressed glass, the Tuba comes in three exterior colors: white, silver, and black. Select styles are on sale for this item.