I've never noticed that languages have tastes. But they do have colours; perhaps because I'm a synesthete, or maybe everyone sees them that way. American English (perhaps I should mention that I'm British?) is a mixture of oranges and yellows; French is clear light yellow; Italian is deep red and dark blue; Welsh is deep dark green and black.
I have a friend who's from Texas; I tried to draw him a picture once of how his voice looks to me when he speaks. I drew it as thick black lines curving up and down with orange and brown shadows. I didn't really draw it very well, but he liked it, I think.