Set transparent background color for transparent SceneView

[grassydragon]

No description provided.

[eqgis]

In SceneView.java
/**
* Set the background to transparent.
*/
public void setTransparent(boolean transparent) {
setBackgroundColor(android.graphics.Color.TRANSPARENT);//Add this line.Avoid this method being invalid.
setZOrderOnTop(transparent);
getHolder().setFormat(transparent ? PixelFormat.TRANSLUCENT : PixelFormat.OPAQUE);
renderer.getFilamentView().setBlendMode(transparent ? View.BlendMode.TRANSLUCENT : View.BlendMode.OPAQUE);
}

[grassydragon]

setBackgroundColor(android.graphics.Color.TRANSPARENT);//Add this line.Avoid this method being invalid.

Hi!
This can be great when transparent is true but when it is false it isn't clear what color should we use.