If you prefer to read it, there is a transcript here: http://trekcore.com/blog/2018/08/in...gner-gersha-phillips-captain-pike-enterprise/ It sounds like I (and some others) guessed right, they went with the TOS-like colours because they were more iconic then 'The Cage'.
I prefer the colours. You know even those ridiculous bare midriff or in Kirk's case gold, mirror universe costumes were more fun.