Numbers have specific colors! Musical notes float through space in specific patterns! No it's not a psychedelic drug experience. This is how synesthesiasts perceive the world. Watched the PBS Nova program on the brain last night which had a segment on this neurologic condition. It's not just limited to music & math, and research is already going on as to how it may be beneficial to non synesthesiasts in learning.
There has to be athletes that experience this on the playing field.