Hi @korenevskiy, isn't this an issue with the extension developer and how the programmed that button vs a Joomla one?

(just asking/trying to understand for my own knowledge)

<button  class=" btn btn-outline-primary btn-sm" type="button">Camera Start</button>

the truth is somewhere in between. Of course, this does not affect the Admin interface. But does the component developer have the right to use the style of the btn-outline-primary and btn-outline buttons?
Since the template is based on Bootstrap. This means that the template should allow you to use a grid from Bootstrap, control styles, calendars and others.

Since the template is based on Bootstrap.

Based on bootstrap != is bootstrap

You're right, but let's evaluate. Joomla should be treated as just a CMS without frameworks or a CMS with frameworks and libraries. So that you can rely on them

And then it turns out that the programmer needs to connect the style to the admin panel.

Maybe this is not a mistake of the dark theme of the template. But maybe this is the goal that Joomla adheres to in the long run.