There is only one category for sailing across the equator and doing such a crossing gives you the honored title of Shellback and puts you in good standing with King Neptune. Someone was pulling your leg about the purple thing. Once you are a Shellback and as you cross the equator multiple times you can always give a small offering to King Neptune as you cross, I hear he likes a nice shot of an adult beverage like a good friend you meet in the pub. If you are sad that subsequent crossings are not including a proper ceremony for those Pollywogs to be properly inducted to the Shellback society and the hilarity that ensues then King Neptune would always approve of a joyous get together and self organized event at a place where adult beverages are served. All Hail King Neptune!