When Ingrid Carey says she feels colors, she does not mean she sees red, or feels blue, or is green with envy. She really does feel them. She can also taste them, and hear them, and smell them. The 20-year-old junior at the University of Maine has synesthesia, a rare neurological condition in which two or more of the senses entwine. Numbers and letters, sensations and emotions, days and months are all associated with colors for Carey. The letter “N” is sienna brown; “J” is light green; the number “8” is orange; and July is bluish-green.