There is at least a 10-20 percent difference in color saturation depending on which browser you use and also a difference betweene Mac and PC computers - different brands of PCs often also show different colors. . Internet Explorer with Colorsync eneabled and Safari show the same saturation that I see on my screen in Photoshop while browsers like Firefox and others show my images with washed out colors. Even monochrome images look paler. Very frustrating.