Short question on cfl!

I see alot of cfl lights. i saw a RED and BLUE cfl. only the outside of the bulb is like painted those colors.
is this legit? or is it just for show ?

EDIT: (i know this is low WATT )
http://www.1000bulbs.com/category/red-colored-compact-fluorescents/

to my knowledge its just the outside of the bulbs painted that color, but not 100% sure as to whether or not they actually output in those specific spectrums...i just use cool white cfls for veg and warm white for flower and it works well enough.

It is just a painted bulb. They're absolutely rubbish, don't bother...

yeah the paint on the bulb will even diminish the intencity of the light..not what we want.

3500 - 6000k = cool white for veg, 2700 - 3000k = warm white for flower

caveman420 said:

3500 - 6000k = cool white for veg, 2700 - 3000k = warm white for flower

Click to expand...

ok im confused. 35-6k for veg. that means 6.000 lumens right? Well why would I downgrade to 3k for flower? i thought in the flower stage u need more light? help.

No not lumens it's the kelvin scale if ure talking lumens u want 1600 at least per bulb. And don't use soft white 6500 use daylight.

which is the best from these 100wat? i was thinbking the top one? nebody?? I dnt see ne "kelvin"
http://www.1000bulbs.com/category/500-watt-equal-compact-fluorescents-2700K

lier said:

which is the best from these 100wat? i was thinbking the top one? nebody?? I dnt see ne "kelvin"
http://www.1000bulbs.com/category/500-watt-equal-compact-fluorescents-2700K

Click to expand...

yea it says right there 2700k