Color profile for an image when it has none.
My asumption is that if an image has no color profile, Firefox will trate it as if an sRGB color profile is embeded. But I was reading some tests published by EIZO monitor's website, that say that Firefox will use the monitor's declared profile, for example Adobe RGB, but that sounds a bit wierd to me.
How does Firefox treat the color when an image lacks any color profile?
Here is the article.
They're right. Firefox does not implement the spec that restricts colors to sRGB. Instead, it just throws the raw RGB coordinates on the screen, so e.g. rgb(100% 0% 0%) is the brightest red that monitor can display.