So, I'm aware that some browsers correct the colors in images in accordance with system settings, and that browsers differ in how they do this. But I'm very surprised when a color specified in a stylesheet appears different from one browser to another on the same system.
With the latest Safari and Firefox, if I draw a div with
background: #885500, I get a box with that color (as confirmed by the native DigitalColor Meter app):
But when I load the same page in Chrome (Mac version 12.0.742.91) on the same system, a MacBook Pro with the default "Color LCD" display profile set, I get a noticeably different-colored box (DigitalColor Meter reports
#a34d00—much more red, a bit less green):
I tried a few different color profiles, and found that the color reported by DigitalColor Meter changed under Chrome. It stays constant in Safari.