[Feflyinvelf]

You don't wear contacts do you? Sometimes I have halo and rainbow effects due to them.

Can also happen with glasses as well.

Glasses are more prone to the red/blue on the edges of hard lined objects. This has to due with the way our red/blue/green receptors aren't in perfect alignment, the glasses cause a distortion which can bee seen usually on TV's at the edges of our central vision. Search for the term Chromatic Aberration, here's a wiki http://en.wikipedia.org/wiki/Chromatic_Aberration

Contacts are more known for halo effects. If you look at a white street lamp in the distance does it have a blue ring halo? Bright lights from behind an object tend to overshadow the object if it’s dark causing it to appear black. Halo effects can sometimes be minimized by going with a larger diameter contact lens.

Don't know about the trailing rainbows, but it could be possible because florescent lights cycle faster than our color vision can see, but our peripheral vision is mostly colorless and has a faster "refresh" rate.

This is why you can usually see a CRT monitor flicker at the corner of your vision, but when you look directly at it doesn't flicker anymore.

These symptoms can all be attributed to the halo effects of a silent migraine, also known as an eye migraine. I have them from time to time, one or both eye's feel like they pulsing or you can feel your heartbeat, and suddenly hundreds of blind spots appear in your vision, enough to make it impossible to read because one eye is missing so much of the letter your mind can't recognize which letter it is.