Starting yesterday, when I go to some websites such as Huffington Post and Facebook, the display of the photos is in two colors, red and green. If I download the photos, they open up with my photo viewing program just fine in their original colors. So, it has something to do with the browser and how it interacts with some websites. Other websites like Time.com, are just fine, and even some of the pictures in the problem websites are fine.
I updated Firefox, Java, my display card, everything I can think of, but still I have the same problem.
Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
Do NOT click the Reset button on the Safe Mode start window or otherwise make changes.
This can also be caused by a problem with the color profile for your display monitor or color profiles embedded in images.
You can disable color management to test that.
You can set the gfx.color_management.mode pref to 0 on the about:config page to disable Color Management.
You need to close and restart Firefox to make the change effective.