[Zope] 'websafe' colours

[Curtis Maloney]

On Mon, 02 Oct 2000, Chris Withers wrote:
> Curtis Maloney wrote:
> > According to a recent study, there are approximately 13 'web safe'
> > colours, out of the full 16,777,216.  Can you be bothered restricting
> > yourself to support the 'lowest common denominator' ?
>
> What makes the other 15,777,203 'unsafe'?
>

As I understand it, it's due to system palettes.  On low colour machines (256 
or even 16colour) some colours are reserved for the system GUI so that you 
can match the 'theme', leaving you with fewer than the full capacity of the 
display you are using.

Admittedly, since most people these days are running 15bit or higher colour 
depths, and non-paletted video modes, for the majority of users this isn't a 
problem. (Thus my 'lowest common denominator' comment.)

The only other possible reason I can recall is that some of the 'named' 
colours are not supported by all browsers, or are not interpreted the same.

> cheers,
>
> Chris

Have a better one,
	Curtis