From Middle English lihte, from Old English līhtte, first and third person singular preterit of līhtan. More at light.
From Middle English lit, lut, from Old English lȳt ("little, few"), from Proto-Germanic *lūtilaz ("little, small"), from Proto-Indo-European *lewd- ("to cower, hunch over"). Cognate with Old Saxon lut ("little"), Middle High German lützen ("to make small or low, decrease"). More at little.
From Middle English lit, from Old Norse litr ("colour, dye, complexion, face, countenance"), from Proto-Germanic *wlitiz, *wlitaz, from Proto-Indo-European *wel- ("to see"). Cognate with Icelandic litur ("colour"), Old English wlite ("brightness, appearance, form, aspect, look, countenance, beauty, splendor, adornment"), Old English wlītan ("to gaze, look, observe").
From Middle English litten, liten, from Old Norse lita ("to colour"), from litr. See above.