How to make plugin's theme consistent with theme plugin?

Hi guys ! I’m new to logseq and enjoy logseq so far. However I find it kind of unpolished when it comes to customizing themes. I have tried some themes in market place, they look fine, but plugins do not follow these themes which makes the user experience very inconsistent.

So what I want to do is make plugins theme and logseq theme looks consistent.

Maybe I should override plugin css in custom.css? Is it possible? Or maybe some better way to do it?

Can anyone help guide me through this, please?

Thank you a lot.