Setting background color on the inner circle for MagicProgressCircle

Hello, The library is very useful to me. Thanks.
I had a question. Can we set the background color of the inner circle for `MagicProgressCircle`. I tried `setBackground` but that sets the background of the whole view. I hope you got what I am trying to say.
At the moment the background for the inner circle is just hollow.
Is there a method to set that to opaque? If not, can you suggest me some workaround.
Thanks.

Start by locating the MagicProgressCircle entry point and inspect how its inner circle is drawn separately from the whole view background. Check the existing setBackground behavior and determine whether an API or documented workaround can make the inner circle opaque; done means the inner circle accepts a background color without changing the outer view.

Written by the indexing model from the issue text.