That's a very important point about the monitors, WaterBreath. Your monitor can make a huge difference. As an extreme example:
Here at work I use 2 monitors side-by-side for the extra desktop space. I had to scrounge them up though, so they don't match. The one on the left is a relatively new NEC MultiSync LCD (2080UX), and the one on the right is a very old Gateway Diamondtron CRT (vx1120). I had just the CRT for years, and honestly thought I was slowing loosing my sight, until I hooked up the NEC next to it and saw it was the CRT that had gotten fuzzier.
Anyway, since the new LCD is much crisper, I typically put my Emacs window in it, and use the other monitor for supporting windows (eg: VisualStudio).
When I took my screenshot and posted it at a href="http://img238.imageshack.us/img238/6481/colorizedemacssg3.png"http://img238.imageshack.us/img238/6481/colorizedemacssg3.png/a I brought it up in my browser to look at it. The colors looked horrible and I could barely read the text. I started to write a complaint about imageshack messing up the images, when I remembered and drug it over to the left screen. Presto, it looked just the same as in Emacs. Doh!
After that, I've had to remind myself to make sure my browser is displaying on the NEC side before I comment on you guys' colors.