Ask HN: Why Are the Interior Surfaces of Aircraft Painted Green?

Why are the insides of aircraft surfaces painted that bilious green color? Is it an anti-corrosion thing? Or is it for some other reason?

https://glasair-owners.com/wp-content/uploads/2019/07/08_test_fitting_GlaStar_Aux_Tank_.jpg

(strange link: seems to work only with copy and paste)