Michael R wrote:
> No, I just mean that the content is visible on the screen and any user can
> see it (no color dependence).

I think we're having a communication failure...  Color definitely affects the 
pixels painted on the screen, and depending on what color values the screen can 
paint, color may affect whether, say, text is visible on a background.

Speaking of which:

   <div style="background: black"><span style="color: black">Text</span></div>

Would you say that the <span> is visible?  What if it had "opacity: 0"?  What 
if 
it had "visibility: hidden"?  Why exactly are these cases different, if they're 
different?

-Boris
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