Paras Nettiselain

http://kb.mozillazine.org/Gfx.color_management.enabled
http://firefox-tutorials.blogspot.com/2010/05/common-issues-solutions.html

Symptoms:
Some images are displayed with weird colors

Solution:
This is due to color management feature, which allows to correct image colors based on embedded color profiles. You could disable color management, but the best way is to enable color management for tagged graphics only, which means all images will display correctly, even if they don’t have color profiles.

1. Type about:config in the address bar, press Enter.
2. Find gfx.color_management.mode in the list.
3. Right-click -> Modify.
4. Set the value to 2.
5. Restart Firefox

If you still experience issues, then disable color management entirely, by setting the value above to 0.
If you also have gfx.color_management.enabled properties, try to reset it or change it to true. This preference should not be present on Firefox 3.5+.

Tämä oli mulla tuossa suositellussa 2:ssa, vaihdoin 0:aan ja nyt kuvat näkyvät oikein tai ainakin paremmin. Ropailin tätä samaa asetusta joskus aiemminkin mutta voipi olla että on päivitysten myötä resetoitunut takaisin tuohon kakkoseen.