I tell ya- after having worked in semiconductor fab cleanrooms where all the flourescent lights have amber UV filters on them, turning the light an orangish yellow, so as to not activate the photolithography polymers during handling- it just eats at your soul! It's hard to really describe it, but having all the blue, green and UV filtered out of the light is terribly depressing and demotivating.
[This message has been edited by SteveFehr (edited 01-06-2007).]