With old-fashioned flags we could create an app with translucent param applied only to a status bar.
window.decorView.systemUiVisibility = window.decorView.systemUiVisibility or
View.SYSTEM_UI_FLAG_LAYOUT_STABLE or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)
window.statusBarColor = Color.TRANSPARENT
But in a new api window.setDecorFitsSystemWindows(false) applies translucent for both - status bar and navigation bar. So, the new api provides less functionality or I'm missing something?