userContent.page.proton_color.system_accent doesn't work

[Nomes77]

Describe the bug
When you enable -moz-bool-pref("userContent.page.proton_color.system_accent") the color does change, but not to the correct one.
The color changes to a lighter blue but not to my accent color, see screenshots.

Expected behavior
Color should be my system set accent color.

Screenshots
first is pref disabled, second one pref enabled.

Environment:

• Distribution
  • Original Lepton
  • Lepton's photon style
  • Lepton's proton style
• Firefox Version: 104.0.2
• OS:
  • Linux
  • Windows 10
  • Mac
  • Other:
• Theme:
  • Light
  • Dark
  • Alpenglow (System: Light)
  • Alpenglow (System: Dark)
  • System Default
    • GTK Theme Name (Linux only):
  • Other: (e.g. Photon Colors, Google Chrome Dark, Fairytale Of Nature)

user.js setup

// Your settings

Additional context

[black7375]

Try to update theme && widget.non-native-theme.use-theme-accent to true.

[Nomes77]

Setting widget.non-native-theme.use-theme-accent solved it.

widget.non-native-theme.use-theme-accent did change the background of checked chechboxes in devtools.
However I have to disappoint you; it doesn't work in about-pages. The color is now the standard blue.
I have tried many things but don't know how to solve.