Is it possible to set the background color? I would like to set #00FF00

Hi,

I've played with the API for Pipio - awesome!

I've managed to create a single clip for Avery (avatar) using Nicola L (voice) after pulling all the avatars and voices using a query string ?pagesize=set to total, to determine the IDs.

I can set transparency to false as I want an mp4 rather than webm, but I cannot see if it is possible to set the background.

Can you advise?

Many thanks
Paul