purple vs empurpled

purple is a noun but empurpled is not a noun.

Word	Noun	Adjective	Verb	Adverb
purple	Yes	Yes	Yes	No
empurpled	No	Yes	No	No

As adjectives, purple and empurpled are synonyms defined as:

Other synonyms of purple include over-embellished.

purple (noun)	empurpled (noun)
(Roman Catholic Church) official dress of a cardinal; so named after the Tyrial purple color of the robes
a color between red and blue
(in ancient Rome) position of imperial status

purple (adjective)	empurpled (adjective)
of a color intermediate between red and blue	excessively elaborate or showily expressed
belonging to or befitting a supreme ruler
excessively elaborate or showily expressed

purple (verb)	empurpled (verb)
color purple
become purple