On some devices (e.g. Huawei D1 Quad running 4.0.2) the notification background is not dark/black (instead it is light grey).
For normal priority notifications we can use a transparent background for the main text area. But what about the icon background style?
For low priority notifications we can use a transparent background for the icon, but what about the main text area background style?
For the latter, we could use android:drawable/notification_bg_low but this is only available on API16 or higher and we cannot use it for API 14, for example, because that is clearly using a different drawable.
Note: targetSdkVersion=19
Note2: This SO question did not help: Default notification background color
