Replace corner light bulb with 921 LED?

I am thinking of replacing my corner parking lights with 921 bulbs to get more light. (Also thinking of changing them to yellow or green). Anyway, anyone out there have the LED version of a 921 bulb? How do they compare in brightness and fit? I want to use my corners for DRL with green bulbs for looks only, but if no one will be able to tell that would be pointless.
Thoughts?

 

this might help.

http://www.sylvania.com/ConsumerProducts/AutomotiveLighting/LampReplacementGuide/AutoLRG-Results.htm

 

link failed

 

http://www.sylvania.com/ConsumerProducts/AutomotiveLighting/LampReplacementGuide/

 

hey i would like to change my lights also..i have clear corners and i put the facotry white light in...but i have silverstar headlights and i want the corner lights to be brighter so what light can use to make it brighter

 

well, a 921 bulb is 15 watts compared to the standard 5 watt bulb. Direct fit replacement. I am thinking of LED 921's because they are more efficient and last a long time, etc. Just don't know if they are worth double the price.