[Bug 37598] New: Double dark line inside default button, e.g. 'OK' / 'SAVE'

https://bugs.winehq.org/show_bug.cgi?id=37598

Bug ID: 37598
           Summary: Double dark line inside default button, e.g. 'OK' /
                    'SAVE'
           Product: Wine
           Version: 1.6.1
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 50034
  --> https://bugs.winehq.org/attachment.cgi?id=50034
Screenshot comparing wines button with windows.

Instead of the colours inside the button going from light to dark they go black
- light - darker.   This makes it look like there is a double line inside the
button.

The middle colour should be somewhere between the two shades and will look 3d.

Originally I thought this was a glitch, it looks like something that could be
fixed just by changing one colour.