[css3-values] section on color values out of date

The section on color values in css3-values [1] is rather out of
date.  It doesn't mention rgba(), hsla(), hsl(), transparent, or
currentColor.  It should probably refer to section 4 of
css3-color [2] as a normative reference.

-David

[1] http://www.w3.org/TR/2006/WD-css3-values-20060919/#colors
[2] http://www.w3.org/TR/2003/CR-css3-color-20030514/#colorunits

-- 
L. David Baron                                <URL: http://dbaron.org/ >
           Technical Lead, Layout & CSS, Mozilla Corporation