I have a little bit of insight on the fighting zebras.
I grew up in Lincoln and was a teacher and head football coach at the school for 7 years. The school was established back in 1907. The legend has it that the basketball team only had old ref jerseys to wear to the game. They put them on and someone said they looked like a bunch of zebras on the court. They then became the zebras. Then you go so why are they blue and gold.? Well I was told because the founder of the school went to Cal Berkeley. I still cannot figure out how it turned into royal blue and gold. I know they had lots of different shades of blue and gold over the years. I know when I was HC we went to the Navy blue and gold. When I left they changed it back and voted on the official colors of Royal Blue and Gold. As far as the Rhinos I guess they are trying to keep the safari theme.