@siim I'm guessing you don't have an icm color profile installed and active in your system, changing the settings alone without installing an icm color profile doesn't cause the problem.

@Korina I understand your limitations. Thank you anyway for taking the time to respond. Maybe natural development of software will end up fixing it.

Greetings

Nothing ¿? It's a shame. This shouldn't be so hard to acknowledge and fix.

Hi @Korina, thanks for replying

It´s been happening for me in all Firefox versions for a long time, now I´m in the latest Firefox 71.0 x64, latest NVIDIA 1070 GPU drivers.
I have my monitor calibrated, and to have proper color managed rendering in Firefox you have to modify a couple of variables in about:config screen as mentioned by @AdamW original post.
I´ve been using other browser just for Windy for a long time because of this, I hadn´t really figure out the cause before I saw this old post searching for a solution.
I´ve tested latest version of Firefox portable and works fine.

Hi.
Nobody acknowledge this, but it´s still happening in 2019 December. It´s the only website that fails with enabled color management. Please fix.
Thanks