discolored

(verb) lose color or turn colorless. Synonyms: discolor. Example: "The painting discolored."

(verb) cause to lose or change color. Synonyms: discolor. Example: "The detergent discolored my shirts."

(verb) change color, often in an undesired manner. Synonyms: discolor, discolour, colour, color. Example: "The shirts discolored."