LED home theater projector?

[alxian]

http://www.neopac-lighting.com/

 

this site claims a 500 Lumen LED, is this cheaper than a standard home theater projectors bulb?

 

also asking for power efficiency.

 

i'm wondering if there were three such 500 Lumen LED light sources, filtered for RGB, you'd have yourself a nifty home theatre projection system, that may have a long shelf life than standard bulb projectors.

 

also would these LEDs produce a purer whiter light than an incandescent bulb making it that much more advantageous in the home theater projector arena?