Poetry feeds my soul. Poetry is comforting and soothing, and it's awe-inspiring as a glimpse of rainbow, which should come as no surprise since poems and rainbows have something in common.
VOA: special.2009.10.12
Therefore you get more consistent colors, norainbow effect and also, a lot longer life then light bulb based models.
For many years parking meters held no fear for Cruzians because a clown, wearing rainbow-striped pants, a wig and a big red nose would drop coins, gratis, into meters about to expire.