Ability to change the accent color in firefox 157

[F-P]

Would it be possible to be able to change the menu accent color (and avoid the purple that appears regardless of the theme)?
I don't remember that the print or the settings menu looked like that before. Even when using a theme different than the default one (I use "Proton" and I tried "Ash") it's impossible to avoid that color and I'd like a more neutral one.
A solution in a next version?

[kelimuttu]

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[Agentvirtuel]

Bonjour

A similar discussion thread https://support.mozilla.org/en-US/questions/1609524

An experiment with userContent.css