[tor-bugs] #31778 [Applications/Tor Browser]: Support default dark-theme for the Circuit Display UI

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#31778: Support default dark-theme for the Circuit Display UI
-------------------------------------------------+-------------------------
 Reporter:  antonela                             |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff68-esr, tbb-9.0-must-alpha, ux-    |  Actual Points:  1
  team, TorBrowserTeam201910R                    |
Parent ID:                                       |         Points:  1
 Reviewer:  antonela                             |        Sponsor:
-------------------------------------------------+-------------------------
Changes (by acat):

 * keywords:  ff68-esr, tbb-9.0-must-alpha, ux-team, TorBrowserTeam201910 =>
     ff68-esr, tbb-9.0-must-alpha, ux-team, TorBrowserTeam201910R
 * status:  assigned => needs_review
 * actualpoints:   => 1


Comment:

 For review: https://github.com/acatarineu/torbutton/commit/31778.

 I'm attaching three screenshots, with default being the one with system
 colors (dark in my case), and the other two dark and light. I was not sure
 whether #D476FF color had to be applied only for Dark mode or for both. I
 tried to only apply for dark-mode via `-moz-lwtheme-brighttext`, however
 that does not seem to work for the default theme when the system is using
 dark mode (see screenshot). Is this ok or should we change the colors
 somehow?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31778#comment:7>
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