I didn't realize it because of running x times a week or hitting some arbitrary threshold pace but during shopping:
While in the past I would've gone for the inconspicuous black, yesterday I was like "oooh I want the thermo tights with lots of neon yellow!"
I remember a reddit thread about a year ago titled: "Are all running shoes designed by colorblind 8 year olds?" and the top comment was "Yes, isn't it wonderful?"
I don't know when or how it happened, but I'm totally one of those guys now!