from past participle of light (v.2). Slang meaning "drunk" is recorded from 1914.
"color, hue, dye," early 12c., from Old Norse litr "color," from Proto-Germanic *wlitiz (cf. Old English wlite "brightness, beauty," Old Frisian wlite "exterior, form," Gothic *wlits "face, form").
colloquial shortening of literature, attested by 1850.
Literature: comp lit/ black lit (1850+)
Drunk (1917+)