try mpl plotting style

[dragonyanglong]

add it as a dependency from conda-forge

[sbillinge]

this refers to using the bg-mpl-stylesheets for plotting colors I think. It means adding that as a dependency but @sbillinge would like to see that done.

[bobleesj]

Not sure we want to include this in v3.1.0?

[sbillinge]

yes, I removed this from 3.1.0