[New Feature] dark theme by default.

[exe676]

hi, i think there should be something like this for a long time. Could you please bring the dark theme option for the default theme in the new version of mybb? 


In addition, if the dark mode is turned on in the operating system, there should be an option to be active accordingly.
an example for this: https://css-tricks.com/a-complete-guide-.../#os-level

[Devilshakerz]

Some solution will likely be implemented with, or not too long after 1.9's release - there's an experimental version at https://mybb.jsoltesz.com/mybb-1.9/ (media="(prefers-color-scheme: dark)").