How to change a Dialog's background overlay color

Question

I want to change the overlay color of a dialog. The first which comes as transparent gray.

I tried:

<item name="android:windowContentOverlay">@color/customColor</item>
<item name="android:colorBackgroundCacheHint">@color/customColor</item>

They did not work. When I tried:

<item name="android:windowBackground">@color/customColor</item>

The content background is changing.

Answer 1

I found a one rule solution!

d.getWindow().setBackgroundDrawableResource(R.drawable.menubackground);

It works for me with a normal dialog. But I dont know if it works on an AlertDialog .