Change the navigationBarStyle dynamically

[YoranRoels]

Version

react-native-router-flux: 4.0.0-beta.24,
react-native: 0.48.4

Expected behaviour

I want to be able to change the navigationBarStyle dynamically.

Actual behaviour

I've tried using:

Actions.sceneName({ 
   navigationBarStyle: {
   backgroundColor: X,
   borderBottomColor: X,
});

When navigating to the scene.
And

Actions.refresh({
   navigationBarStyle: {
      backgroundColor: X,
      borderBottomColor: X,
   },
});

When mounting the scene.
However, this isn't changing anything.

[Blapi]

Not supported

#2639