Fenix: Navigation bar buttons are hardly visible on some devices

[TitanNano]

Steps to reproduce

Open Fenix

Expected behavior

Navigation bar buttons should be clearly visible.

Actual behavior

I'm on android 7 and it's pretty hard to see the navigation bar buttons in the default Fenix theme. They only have a slight black drop shadow, but the icons them self remain white.

Device information

• Android device: 7.1.1
• Fenix version: 1.0.1907

[sblatz]

This is likely due to the fact that we can't set windowLightNavigationBar on

[brampitoyo]

Let me take this issue on. Thanks @TitanNano for catching this issue!

@sblatz I will ask the team about the right dark colour to use, and get back to you.

[bsurd]

This is also reproducible on an HTC Desire 820 (Android 6.0.1)

The issue is not reproducible when switching to Private Mode since the buttons remain white.

[vesta0]

@eeejay let us know if you have any recommendations.

[eeejay]

I don't have any further recommendations here. Looks like there is an obvious fix.

[ekager]

Closing for #1144