Ferdi: Dark Reader settings do not follow the accent color

[Sauceee]

" are comments from us and won't be
visible in your bug report, so please don't put any text in them.
-->
Describe the bug

Darkreader settings do not follow the accent color.

To Reproduce

Steps to reproduce the behavior:

1. Go to Settings and set a accent color
2. Edit a service and enable dark mode
3. The dark mode settings color is not changed

Screenshots

Desktop:

• OS: Windows 10
• Ferdi Version: 5.5.0-gm.2

[sampathBlam]

@kytwb I can take this up.