Theme status pages (and dashboard?) by defining "base colors" in Appearance setting

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🏷️ Feature Request Type

Status-page

🔖 Feature description

It would be great if one can configure Uptime Kuma's "base colors" in the web interface, instead of manually overwriting many individual status page elements using CSS.

Bonus: also theme the dashboard this way.

✔️ Solution

Allow the user to define the hex/RGB values for the "base colors" in the Appearance section of Uptime Kuma's settings.

❓ Alternatives

A CSS solution that does not require overwriting many individual status page items would also be good, but unfortunately I don't know how to do that (if this is already possible, a Wiki entry on how to do it would be appreciated).

📝 Additional Context

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