[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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Changes (by mcs):

 * status:  new => needs_information


Comment:

 I think this is caused by Tor Browser's anti-fingerprinting features. What
 happens if you use about:config to set `ui.use_standins_for_native_colors`
 to `false`? You may also need to set `browser.display.document_color_use`
 to `2`. Note that it is not recommended to keep these changes because they
 may help a website identify you.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30812#comment:2>
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