How to set a background color to channel artwork?

Hi, completely new here. I can’t seem to easily find information on how to set the background color for channel artwork? I have images on a transparent background that I want to use, however, it seems there is a default gradient white to gray background that I would like to override but can’t figure out what attribute to set for it.

Can someone help? Greatly appreciated!

I don’t think you can override the default. Why not just add a background to your artwork? Any image software should allow you to create a background layer and place your transparent artwork over it.

-JT

Thanks for the quick reply. We have a situation where we’d like to be able to reuse the transparent images we already have so it would be better to be able to set a uniform background image. But it doesn’t seem to be possible?