2.1.8 [CSS3Color:2011] Section 4.4, 'currentColor' color keyword


The specification states:

 The value of the 'color' property. The computed value of the 'currentColor' keyword 
 is the computed value of the 'color' property. If the 'currentColor' keyword is set 
 on the 'color' property itself, it is treated as 'color:inherit' at parse time.

Quirks Mode, IE7 Mode, and IE8 Mode (All Versions)

The currentColor keyword is not supported.