[REQUEST] Theme option

[Shisuiicaro]

Is your feature request related to a problem? Please describe.

I want to make some custom themes, but i don't want to make a whole another hydra fork just to do it

Describe the solution you'd like

I would like a theme option, where you can switch between custom css, and ppl can make pull request with their custom theme so everyone can easily use them

Describe alternatives you've considered

No response

Additional context

No response