backgroundColor: Can I change the backgroundcolor of canvas panel? How?

[Angry-Sparrow]

I set the defaultViewport to iphone6.
The canvas is empty and the color is ugly.
I want to change the color.
Is there any way？

[mayank99]

Not sure it would help in your case but we had a similar problem and ended up just adding a css rule in preview-head.html

[Angry-Sparrow]

Thanks. I will try.