Dark mode fixes

[mralext20]

closes #65

i do not have any vive basestations to test those features. can you check, @jeroen1602 ?

[jeroen1602]

I also don't have any Vive base stations, their support is completely theoretical. You can enable getting fake devices in the list for testing by going to lib/main.dart and removing the comment on line 26 (don't forget to import the FakeBLEBackend.

But I'll have a look at it.

[jeroen1602]

It's looking good. Could you also change the selected background for the main devices page, the nicknames page and the Vive Base station ids page. (For the Nickname page and the Vive Base station ids page you can tap the 🚫 10 times to generate fake data (debug only)).

I'm not sure what to change the background color to because Theme.of(context).selectedRowColor doesn't look good in dark mode.

[BlakCake]

I have Vive Base Stations so maybe I can help?

[jeroen1602]

@BlakCake that is great! can we continue this conversation in #15?

[jeroen1602]

Great job! Thanks for the help.