Dark mode for Android 10+

[lehenry]

Use background color in splash screen,
Add force dark allowed for Android API 29+ (follows the user theme)
Night color scheme for 'light blue' to fix row dividers

[Kaligula0]

Great idea! 👌 🤩 Is it difficult to make it Android 9+? 🤔

[lehenry]

@Kaligula0 yes, it would be a bit more complicated, with Android 10, there is no need for a specific setting, there is a system flag for the dark mode, and I didn't wrote a full theme, the dark mode convert (almost) all colors by itself. I took the lazy path 😉

[erikhuizinga]

I'd stick with dark mode for the more recent Android versions only, as usage of older versions than Android 10 should be limited and declining. Furthermore, it keeps this PR simple.

[Kaligula0]

@erikhuizinga I know, I know… I just love dark mode but my phone development finished on Android 9 🤷
Nevertheless I am definitively for that Pull request!

[erikhuizinga]

It can always be be developed for Android <= 9 (by you? 😉) after this PR is accepted.

[Kaligula0]

Is this PR still alive?