Support forcing light mode

[jyavorska]

Background

My system is dark mode by default, but occasionally I want to force light mode. I'd love if I could use this to change the color preference the other way around.

Proposed solution

Exact same behavior, but it inverts the current setting instead of forcing dark mode.

Alternatives

Couldn't find any others.

Additional context

Maybe this is possible, but if so I couldn't figure out how to make it work and the description of the extension seems to at least in the add-on site describe it as only being able to force dark mode.

[rugk]

Duplicate of #5

[rugk]

Es explained there and in the Readme, it's currently unfortunately not possible due to how the add-on is designed and the limitations of the WebExtension APIs.