[wp-trac] [WordPress Trac] #31345: Admin menu icon colors fixes

[WordPress Trac]

#31345: Admin menu icon colors fixes
----------------------------+-----------------------------
 Reporter:  afercia         |      Owner:
     Type:  defect (bug)    |     Status:  new
 Priority:  normal          |  Milestone:  Awaiting Review
Component:  Administration  |    Version:  trunk
 Severity:  normal          |   Keywords:
  Focuses:  ui              |
----------------------------+-----------------------------
 After r31422 IE 8 users will feel a bit blue :) See screenshot:

 [[Image(https://cldup.com/oAVakHF21e.png)]]

 the icons color was: `#999` and changed in this
 {{{
 #adminmenu div.wp-menu-image:before {
         color: #00b9eb;               <-- light blue
         color: rgba(240,245,250,0.6); <-- rgba light grey
 }
 }}}
 and IE 8 doesn't support rgba so it will get the blue.

 The proposed patch fixes also the icon color when tabbing (focus) the
 submenu items, this should pair the "focus" with the "hover" behavior. See
 before/after screenshot. Doesn't work in IE 8, just modern browsers.

 [[Image(https://cldup.com/EwZlqjPnVS.png)]]

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Ticket URL: <https://core.trac.wordpress.org/ticket/31345>
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