Synesthesia I think is the most unique and amazing mutation a person could ever get, and I wouldnt mind being blessed with this amazing gift, because it changes your perception on the world and makes you view life from a different angle. This mutation, fuses, or blends together two or more of a persons senses. For some, every time they hear music they may see colors and taste. for others when they hear someone talk they see the words spoken in different colors in front of their eyes. Others may feel something when someone speaks, or smell what they hear. It varies.
This condition is one hundred percent harmless, and 1 in 200 people are blessed with this incredible mix of sensations, the majority being left handed people, and women. many cases of synesthesia are unknown because most people don't know what is happening to them or think that it is normal. Personally I think this is such an amazing gift, and would love to see a rainbow of colors dance before me every time I hear a song, or a bird chirp or a person speak, imagine how bright the world would be!
"Green is the prime colour of the world, and that in which its loveliness arises." -Pedro Calderon de la Barca