Feature request to change "default" theme function.

[ignat980]

⚬ PROBLEM:
I have custom theming in another extension that relies on the dark Youtube styling, and ImproveTube seems to overwrite the YouTube theme setting to "Device" when "default" ImproveTube theme is selected. This is especially noticeable when switching between accounts with different YouTube theme settings.

⚬ SOLUTION:
Replace "default" with a switch that disables ImproveTube theming overwrites.

⚬ ALTERNATIVES:
Change "default" ImproveTube theme setting to keep whatever setting is set in the YouTube theme options (Device, Dark, or Light), instead of always setting it to "Device".

⚬ RELEVANCE / SCOPE:
This would be good for users that like YouTube's default styling or want to have even more control over their YouTube CSS via another extension, so for both hyper-casual users and super-users. This change would also be more transparent in what the "default" setting was intended for - the setting in YouTube, not ImproveTube Light theme.

⚬ "SIDE EFFECTS":
No side effects I can think of, should be just a straightforward improvement.

⚬ CONTEXT:
What happens when "default" is selected and Device (Light) theme is forcefully selected by ImproveTube:

VS

No extension, custom theme functional on top of Dark theme:

Thank you!

SHORT Table	(Summary)
Problem	ImproveTube "default" theme is not default
Solution	ImproveTube on/off switch for theme changes
Alternatives	ImproveTube "default" theme to use YouTube setting, not overwrite to Device theme
Scope	All users, but mostly hyper-casual-users and super-users
Side effects	None
Context	See screenshots

[raszpl]

its a bug #2138

[ImprovedTube]

hi and thanks @ignat980