I just installed Snow Leopard over the weekend, and had to update a certain file for someone, and when I emailed it through gmail, the preview displays the color incorrectly. Here's what I mean: First image is in Illustrator. Second is in GMail's preview under Safari and FireFox. Third image is in Gmail's view option under FireFox. Under Safari the "view" option displays the colors correctly. 1 2 3 The color I have it set to under Illustrator CS4 in CMYK is 50,100,0,0. I've not done anything to tweak the color profiles (I always work with default color settings), so I'm not sure what's going on. I read that SL has a different gamma setting (that of Windows), but I've worked on Windows for years, and never had this issue come up either. edit: after posting this and seeing what it shows up as in here, the color is completely different than what it looks like in illustrator (i'm guessing it has something to do with cmyk > rgb) conversion, but i'll say that 1 does not look the same as it does in illustrator, and that here it looks like what "view" option does in firefox. maybe i'm not using a web safe color?