You walk into shower filled completely with boring black tile and turn the water on. Soon the shower walls begin to transform themselves into psychedelic changing patterns. This cool scenario really exists.
Inspired by the stunning Northern Lights of Alaska, this line features 4 × 4 glass tiles that appear black at room temperature and move through the color spectrum when temperature (warm water, radiant heat, etc) is applied. The moving color is dynamic to the temperature of the heating agent.
(I stole this)