Change default styles for hail ggplot (#11390)
Change default styles for hail ggplot (#11390)

* Better defaults for professional looking plots

* Adjusted title size defaults

* Adjust fonts per Chris's comments
hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail