Amazing! I could almost write a script for the meeting in which that solution was decided upon.
Idea is proposed by one individual at level N in the hierarchy. Some cursory justification is provided, based on theory from a design article they read, they think, or maybe it was a youtube video - doesn't matter: Yellow attracts attention! Green makes people want to proceed! Red makes people want to stop! It's so obvious.
Numerous objections are raised by individuals at level < N in the hierarchy, who have a fairly deep understanding of design and have thought a lot about the problem. The objections are considered briefly, and then summarily ignored.
I've still not learned, probably never will, that tone rarely comes across in text :-)