photochromatic
/ˌfəʊtə(ʊ)krəˈmatɪk/adjective
Of or relating to the action of light in causing a change of colour or a perception of colour; specifically (of lenses) exhibiting photochromism, photochromic.
Origin
Mid 19th century; earliest use found in Proceedings of the Royal Society of London. From photo- + chromatic, perhaps after French photochromatique.