[Bugs] #3879 sugar-artwork UNSP: Style the palettes

[Sugar Labs Bugs]

#3879: Style the palettes
------------------------------------------+---------------------------------
    Reporter:  manuq                      |          Owner:  manuq      
        Type:  defect                     |         Status:  new        
    Priority:  Unspecified by Maintainer  |      Milestone:  0.98       
   Component:  sugar-artwork              |        Version:  Unspecified
    Severity:  Unspecified                |       Keywords:  13.1.0     
Distribution:  Unspecified                |   Status_field:  Unconfirmed
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Comment(by manuq):

 This makes the activity separator the correct color and almost get all the
 width:

 {{{

 --- a/gtk3/theme/gtk-widgets.css.em
 +++ b/gtk3/theme/gtk-widgets.css.em
 @@ -445,14 +445,15 @@ SugarPaletteWindow SugarGroupBox *:insensitive {
      padding: 0px $(subcell_size)px;
  }

 -.menu * {
 -    color: @white;
 -}
 -
  .menuitem {
      padding: $(subcell_size)px $((subcell_size * 3 - font_height) / 2)px;
  }

 +.menuitem.separator {
 +    padding: $(subcell_size)px 0;
 +    color: @button_grey;
 +}
 +
  .menuitem:prelight {
      background-color: @button_grey;
  }
 }}}

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Ticket URL: <http://bugs.sugarlabs.org/ticket/3879#comment:1>
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