Going Green can mean sacrifices, like driving less, paying more or enduring the eerie blue of compact fluorescent bulbs.

FORBES: In The Sunshine

Green fluorescent protein absorbs this blue and re-emits it as a green glow.

FORBES: Magazine Article

The hosts - who took to the field in fluorescent yellow with Leicester in baby blue - fielded a multi-national line-up which included former England and Wasps centre Fraser Waters and England Sevens and former Sale winger Andy Vilk.

BBC: Treviso 16-60 Leicester

IBM's researchers have also patented a related nano-patterning method that uses fluorescent spheres that can take the color red, blue or green.

ENGADGET: IBM brings the fight to counterfeiters with nano-sized authentication methods (video)