[tor-bugs] #30812 [Applications/Tor Browser]: cant modify browser default background color - about:blank, about:newtab

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#30812: cant modify browser default background color - about:blank, about:newtab
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 Reporter:  kingfitz                  |          Owner:  tbb-team
     Type:  defect                    |         Status:  needs_information
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:                            |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by Thorin):

 use this in a **userChrome.css**: tested and working in TB8*. There is no
 need to change settings that protect your fingerprint

 {{{
 @namespace
 url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

 /* about:newtab and about:blank
  * also remove white flash: see https://bugzilla.mozilla.org/1488384 */
 #browser vbox#appcontent tabbrowser,
 #content,
 #tabbrowser-tabpanels,
 browser[type=content-primary],
 browser[type=content] > html {
         background: #2A2A2E !important
 }
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30812#comment:3>
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