Peronsal Customizable Forum Themes

I’m sure I am not the first one to suggest this, but wouldn’t it be nice for a user to be able personally customize how the forum looks for them. Just to be clear, this wouldn’t change the look of the forum for everyone, only for yourself.

Example theme comparison I made:
Before and After.

This is a feature that would allow a user to change a forum’s look to their personal preference.

This is already possible with browser extensions such as Stylish, but there’s a sharing problem (it’s hard to give your style to other people).

Raised this years ago.

You can build a customisation that allows users to select between various styles.

See this: