Remove red coloration from "Logout" menu item

Summary: I made the red stronger (always visible, not just a hover state) for the "Mute" feature, but this made Logout look a little intense. Just make it normal-colored, logging out isn't a big deal.

Test Plan: No longer saw bright red logout action in profile dropdown menu.

Differential Revision: https://secure.phabricator.com/D19044

src/applications/people/engineextension/PeopleMainMenuBarExtension.php

@@ -113,7 +113,6 @@ final class PeopleMainMenuBarExtension
         ->setName(pht('Log Out %s', $viewer->getUsername()))
         ->addSigil('logout-item')
         ->setHref('/logout/')
-        ->setColor(PhabricatorActionView::RED)
         ->setWorkflow(true));
 
     return $view;