In the Toasts.Forms.Plugin, how can I change the background color to the toast?

Hi!

I'm using this plugin: https://github.com/EgorBo/Toasts.Forms.Plugin
With the version 2.0.4

I need change the backgroundcolor but I don't find how.

I see that in the first param of Notify, I pass a enum ToastNotificationType, this enum have a field called custom, but a don't find how I can use it.

Any idea how can to do it?

Thanks

Regards!