F.lux has no way to do this correctly on Android. Luckily, since there was a lot of positive feedback to the implementation of this feature in the 7.0 preview,

F.lux has no way to do this correctly on Android. Luckily, since there was a lot of positive feedback to the implementation of this feature in the 7.0 preview, it has been backed at the driver level for 7.1. Now the feature works perfectly and has no performance impact. It also opens the door to a wide array of other modifications : -color adjustements -temperature shift - color-blindness compensation Basically you can apply any matrix you want on the screen output.