The flat areas of grays always have a pinkish warm cast, and I have to adjust the gray colors in Photoshop.

However, not even Photoshop/Image Ready can export neutral grays in gifs well. It takes a lot of playing with the Image Ready settings to get anywhere near neutral. Most grays come out either distinctly blueish or pinkish.

Dale

Why, I’m afraid I can’t explain myself, sir, because I’m not myself, you know...
- Lewis Carroll