Used by NASA to help astronauts sleep in space, this is the light bulb that encourages production of melatonin—the hormone that promotes sleep. Unlike typical light bulbs that emit high levels of short wavelength “blue” light that suppresses melatonin, the NASA light bulb’s patented filter reduces blue light by 50% to facilitate a better night’s sleep. Ideal for use in a nightstand lamp for 30 minutes before you fall asleep, the light bulb helps maintain your body’s natural circadian rhythm so you fall asleep faster and wake up more refreshed. The 9-watt LED produces the same light as a 65-watt incandescent for optimal illumination while reading yet lasts up to 16X longer.
 

I've always found the ones that go dark when you turn them off work pretty well...

I find just using the "soft glow" yellow type of bulb, keeping the light low before bed, and having flu.x enabled on my computer works just fine for helping me sleep.

I've got a super-bright LED bulb (the white, white, white one) in my bedroom/office.  It probably puts out more of the blue wave-length than any light bulb I've ever owned and yet I can fall asleep just sitting at the computer.
 
However, I use James' method and just turn the dang thing off when I want to get some sleep (which occurs roughly 20-40 seconds after my head hits the pillow). 

craigb
 
just turn the dang thing off when I want to get some sleep (which occurs roughly 20-40 seconds after my head hits the pillow). 

You're my hero.
 
You can turn the light off *after* your head hits the pillow.

bapu

craigb
 
just turn the dang thing off when I want to get some sleep (which occurs roughly 20-40 seconds after my head hits the pillow). 

You're my hero.
 
You can turn the light off *after* your head hits the pillow.

I clap, but I just don't have the clap.
 

craigb

bapu

craigb
 
just turn the dang thing off when I want to get some sleep (which occurs roughly 20-40 seconds after my head hits the pillow). 

You're my hero.
 
You can turn the light off *after* your head hits the pillow.

You'd have a light show in your room if you dreamed you were at a concert.

Nah, every dream I have of being at a concert, I find myself onstage crapping my pants wondering why 'cause I don't remember how to play any of the songs - lol!

Light not (necessarily) blue - check
Goes dark when turned off - check
Can turn off after head hits pillow - check
Light show - check