Is there a way to change the background colour?

[alanWWM]

When two apps opened side by side, the colour of the background is grey.  I would  like to change it to black.  Is there a way to do it? 

[SamsungNantakkumar]

Hello NJnosa. I am Avinash, from Samsung.

We're sorry for the experience. We strongly suggest you contact our Samsung Care Line at 1800-425-2997 and our experts will be able to advise you accordingly.

Hope this can help you.
Thank you.