Also, "I hear colors black and red" sounds unnatural to me. Granted, I'm not a native speaker of English, but "I hear THE colors black and red" or "I hear black and red" (not accepted) both seem more grammatical.
These are song lyrics; see, for example, https://mojim.com/usy119289x11x20.htm. And actually, a neurological condition called synesthesia allows some people to hear colors; see the link in endless_sleeper's comment.
'I hear the colours black and red' is accepted. (I did a thought experiment, substituting 'see' for 'hear'. Killed the poesie. If no definite article, then a comma is needed, announcing the list, IMHO.)