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Description
I saw that you're working on a new version right now. Therefore I won't file a PR which might collide with your work but add this so that others might benefit from it and you might add this in the new version:
In the current version of the package, the background color can't be changed via a variable.
Perhaps you want to expose the following so it can be modified! Here I change the background-color of the checkbox to lightgrey
:
.pretty .state label:before {
background-color: lightgrey;
}