browser.display.use_system_colors

browser.display.use_system_colors

Supported on: Windows 10
Registry HiveHKEY_LOCAL_MACHINE
Registry PathSoftware\Policies\Mozilla\lockPref
Value Namebrowser.display.use_system_colors
Value TypeREG_DWORD
Enabled Value1
Disabled Value0

mozilla.admx

Administrative Templates (Computers)