1) Color 2) Color in 3) Color purple 4) Colorise 5) Colorize 6) Colour 7) Colour in 8) Colourise 9) Colourize 10) Flush 11) Purple 12) Purpurate 13) To darken or redden 14) To embellish unduly 15) To make purple 16) Turn violet Found on https://www.crosswordclues.com/clue/empurple
Em·pur'ple transitive verb [ imperfect & past participle Empurpled ; present participle & verbal noun Empurpling .] [ Prefix em- + purple . Confer Impurple .] To tinge or dye of a purple color; to color with purple;... Found on http://www.encyclo.co.uk/webster/E/32