Hi, I have an overlay which transitions with a fromBottom transition. I want it to appear but also come with a fade in black background.

It looks like in the picture. The original background is white, but I want to cover it with a black background.
But I also want that little New Game, Return thing to come from the bottom.
How do I do that? I tried making the black background a rectangle, bgRect but if I put it in the sceneGroup it will appear from the bottom. I just want it to fade but the NewGame, Return to be from bottom.
Can I make a different sceneGroup? Or give the bgRect a separate transition effect?