Firefox 3 has enhanced colour profiles which makes colours of pictures look better and less faded. This feature is catching up to Safari’s ability to render pictures and is not turned on by default in Firefox for the reason below.
Warning: Turning this setting on will decrease the performance of Firefox.
To do this type in the address bar:
Click the o.k button or something to that effect.
In the filter text box type the following to get to the key value pair of the settings.
Change the value to true. Restart Firefox and all should be working.