I was at Ft. Sill in 1972, with that red artillery ascot and a red beret, the dress uniform would look awfully bright.
Here is a mention of the period, and experiment that you are talking about.
“In addition, after HQDA encouraged the unofficial use of morale-enhancing headgear in 1973,”
I forgot all about that dang ascot. LOL! Wow! What a pain that thing was.