I need a better background to match a very yellow HA, and yes I NEED the background, the HA doesn't work without the background. So please, do you have any suggestions for me?

Have you tried ? Possibly might work if you just want a splash of yellow but then or could too.

Not too many backgrounds I can think of that are mostly yellow. Is there another color you'd be okay with having in it as well? Or do you just want something yellow?