[whatwg] Accept full CSS colors in the legacy color parsing algorithm

[Tab Atkins Jr.]

On Fri, Jul 15, 2011 at 11:57 AM, L. David Baron <dbaron at dbaron.org> wrote:
> On Friday 2011-04-08 13:54 -0700, Tab Atkins Jr. wrote:
>> This doesn't match Webkit's behavior.  Instead of steps 5 and 6, we
>> just try to parse it as a CSS color.
>
> As I pointed out in
> http://lists.whatwg.org/pipermail/whatwg-whatwg.org/2010-May/026449.html
> this isn't compatible with doing the following simultaneously:
>  * using the algorithm given, which converts the values to colors at
>   parse time
>  * correctly handling dynamic changes of system appearance for the
>   system color values
>
> Correctly handling dynamic changes of system appearance here would
> be a significant amount of work even if the algorithm here changed,
> and I'd really rather not add that support for a legacy feature, nor
> would I like to have an inconsistency between CSS and HTML as to
> whether system colors are dynamically updated.

WebKit now matches the spec (and Firefox) anyway, so the issue is moot.

~TJ