Unity Android Show Status and NavegationBar(must not cover the game screen) and set statusBar color.

I need to show the status and navegation bar without losing space on the game screen, and add a Gray color only in status bar. I have tried this code to show the status Bar:

Code (CSharp):

1.     private static void setStatusBarValueInThread()
2.     {
3.         using (var unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
4.         {
5.             using (var activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity"))
6.             {
7.                 using (var window = activity.Call<AndroidJavaObject>("getWindow"))
8.                 {
9.                     window.Call("setFlags", 2048, -1);
10.                 }
11.             }
12.         }
13.     }

and y have set : Screen.fullScreen = false; on the Awake() and this works perfectly. The problem comes when i want to change the color, it doesn't change, the status bar is still on black color.

Code (CSharp):

1.     private static void applyUIColorsAndroidInThread()
2.     {
3.         using (var unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
4.         {
5.             using (var activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity"))
6.             {
7.                 using (var window = activity.Call<AndroidJavaObject>("getWindow"))
8.                 {
9.                     window.Call("setStatusBarColor", unchecked((int)_statusBarColor));
10.                 }
11.             }
12.         }
13.     }

Both methods are called as JavaRunnables in a code like this:

Code (CSharp):

1.          using (var unityPlayer = new AndroidJavaClass("com.unity3d.player.UnityPlayer"))
2.         {
3.             using (var activity = unityPlayer.GetStatic<AndroidJavaObject>("currentActivity"))
4.             {
5.                 activity.Call("runOnUiThread", new AndroidJavaRunnable(setStatusBarValueInThread));
6.             }
7.         }

Thanks, and i hope someone can help me.