[csswg-drafts] [media-queries] Reinstate "inverted-colors" somehow

grorg has just created a new issue for 
https://github.com/w3c/csswg-drafts:

== [media-queries] Reinstate "inverted-colors" somehow ==
In this commit: 
https://github.com/w3c/csswg-drafts/commit/3abb7e30e5a7ec5f7504f5bc6470cf3c9a123b37
@tabatkins removed inverted-colors

Since there is no media-queries-5 specification yet, can we either 
make one or put this back into MQ4? WebKit has been shipping with it 
for a while.

Similarly, it would be nice to merge in #586 (I just implemented it in
 WebKit)

Please view or discuss this issue at 
https://github.com/w3c/csswg-drafts/issues/732 using your GitHub 
account