mono/MonoGame — pull request #1514 by omd (2013-03-07 20:57:47+00:00)
Title: Fixed byte order for Texture2D.GetData to ARGB on Android

see http://developer.android.com/reference/android/graphics/Bitmap.html and http://developer.android.com/reference/android/graphics/Color.html

the latter states that the order should be ARGB:
(alpha << 24) | (red << 16) | (green << 8) | blue