[alasdair_]

>it’s more like blue m&m’s than an actual requirement

Did you mean Van Halen's famous "WARNING: ABSOLUTELY NO BROWN M&Ms" clause?

https://www.snopes.com/fact-check/brown-out/

[dialamac]

Probably. It’s an honest mistake. For Gen Xers and early millennials blue m&ms are memorable for being added in the 90s with much ludicrous publicity.