Hmmm... never checked it in other browsers. Let's see:
Chrome: yellow
IE: would not open the page (who cares... who uses IE????!!!!!!!!!)
Firefox: yellow
Maxthon: yellow
PS: yellow with management on, purple if turned off.
Paint: purple (I too had NEVER opened paint since installing Win 7...) PixInsite: purple
MaxIM: Purple
Narp, 'cause I don't use PI. I still can't get my head around it - mostly due to NOT trying. I just stick to my old workhorses - CCDStack stretch, into PS CS5.
Interesting results... Despite the survey numbers it looks like it's not that hard to to get a purple car Even some apps that do colour management quite well don't have it turned on by default
Even some apps that do colour management quite well don't have it turned on by default 
