Frontend Dark Mode

Hello,
I'm working on a new site and the request is to have a button that toggles light and dark mode for the user. 
I'm still in the building/testing phase, with Joomla 5.3.3 and CB 2.10.0
I have a button that's working for the template switching between light and dark modes. It does this by adding a "dark-mode" class to the body and an attribute data-bs-theme="dark" to the html tag as instructed for Bootstrap v5.3.
Even with the Bootstrap 5 compatibility enabled in the CB > Configuration > Integrations, the colors don't change for CB. 
Is there a way to display dark mode in CB frontend? 
Before writing CSS to achieve this, I was wondering if I'm missing something? 
I also noticed that when loading Bootstrap 5 CSS, it's version 5.0 and as far as I understand the switch becomes possible after v5.3. 
If v5.3 will be implemented in future CB versions, I might hold off until then as I still have a long way to go with the site. 

If I add to the page header a CDN foro Bootstrap v5.3, I do get several items within CB to change, e.g. dropdown menus, but many items have classes "-light" I'm wondering there may be somewhere to change that? 

Thank you,
Tomás
 

We don't have dark mode support on frontend. You'd have to write the CSS for that. We only support backend dark mode at this time. As far as I'm aware Joomla doesn't have a frontend dark mode implementation either.

However give this a try. Within CB > Configuration > Integrations set "Bootstrap (Frontend)" to "Bootstrap 5 Compatibility" and it'll just entirely use your template except for some backwards compatibility CSS instead of loading our own Bootstrap. See if that looks better for you. Should require a lot less CSS to be compatible with your dark mode.