Red blue and green grease is available. My brother is a heavy equip mechanic and swears by red grease. Kendal makes some blue grease I think. Says it does not harden and works fine. Can't remember the name though. I have not seen any orange grease for you Kubota guys though.
rswyan,
yep that is it, I used to use a Super blue wheel bearing grease years ago in my mechanic days. Was VERY good stuff. Have not seen any in a long time though....