Hi Alex T⚜️ I am wondering why you are avoiding replying about changing the "android:navigationBarColor" dynamically?  (It's the bar on the very bottom on ANDROID. phones)

It can be done MANUALLY inside styles.xml, a manual setting means you are stuck with the color in Dark Mode which is not ideal 

@color/theme_color

It's better to change colors in Theme.js file (instead of direct modification of Android project) it should change colors dynamically, however it looks like there is some error in the library we're using so it's actually doesn't work properly, I hope this bug will be fixed in the future, then it should start to work.