Sounds have colors for me. It's not overwhelming, but, for example, the timbre of Jerry Garcia's guitar is visibly metallic gold. Sometimes it's tinged with another color -- rosy or green or blue -- but it is still metallic gold, and if you touched it, you would feel the same thing as gold metal. Eric Clapton's guitar, by comparison, is a rich burnt orange, and very slightly textured like a painted interior wall. Jimi Hendrix's is very saturated green, which is confusing when he's playing "Purple Haze"!