Specifically "We'll fling our green & gold afar". They were written in 1931 which is before, i believe, Baylor wore old gold on their uniforms. Point being, when these words were written they were referring to the color of yellow flowers or dandelions when they flung their gold afar. If they had just called it what it is - which is yellow - and not gold, it would have saved everybody a lot of heartache.
Well I ain't no greenhorn!!