For over a year now I've been specifying LED lights for every architectural client who comes my way. I've done this secure in the fact that LEDs are the most efficient way to light a space, providing between 60 and 100 lumens per watt of energy spent (compared to between 12 and 17 lm/W for traditional incandescents).
Recently I've been introduced to the gospel of Plasma lights, an edgy technology which produces about 140 lm/W on average...
So, I think the time has come to change my tune...blacklight warm-up and hyper-efficient white light in a single (tiny) unit? I'm on it.