solarize

(verb) reverse some of the tones of (a negative or print) and introduce pronounced outlines of highlights, by exposing it briefly to light, then washing and redeveloping it. Synonyms: solarise.

(verb) become overexposed. Synonyms: solarise. Example: "The film solarized."

(verb) overexpose to sunlight. Synonyms: solarise. Example: "Be careful not to solarize the photographic film."

(verb) expose to the rays of the sun or affect by exposure to the sun. Synonyms: sun, insolate, solarise. Examples: "Insolated paper may turn yellow and crumble." "These herbs suffer when sunned."