[GHC] #13718: diagnostic colors: differentiate between message head and message body

[GHC]

#13718: diagnostic colors: differentiate between message head and message body
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        Reporter:  int-e             |                Owner:  (none)
            Type:  feature request   |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.2.1-rc2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13444            |  Differential Rev(s):  phab:D3599
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"139ef04bdbd14b74dd6202295e11a37295442fc8/ghc"
 139ef04b/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="139ef04bdbd14b74dd6202295e11a37295442fc8"
 Add "header" to GHC_COLORS

 Add "header" to GHC_COLORS and allow colors to be inherited from the
 surroundings.

 Test Plan: validate

 Reviewers: austin, bgamari

 Reviewed By: bgamari

 Subscribers: rwbarton, thomie

 GHC Trac Issues: #13718

 Differential Revision: https://phabricator.haskell.org/D3599
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13718#comment:4>
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