It can be very useful to pick a color based on the color of a pixel on screen, much like the native OS X color picker lets you do.
<rdar://problem/15469621>
Pull request: https://github.com/WebKit/WebKit/pull/1224
Committed r295147 (251236@main): <https://commits.webkit.org/251236@main> Reviewed commits have been landed. Closing PR #1224 and removing active labels.