flying colours vs success

flying colours and success both are nouns.

Word	Noun	Adjective	Verb	Adverb
flying colours	Yes	No	No	No
success	Yes	No	No	No

As nouns, success is a hypernym of flying colours; that is, success is a word with a broader meaning than flying colours:

flying colours (noun)	success (noun)
complete success	an attainment that is successful
	an event that accomplishes its intended purpose
	a person with a record of successes
	a state of prosperity or fame