I had pin denim and made a dress for my granddaughter to be a flower girl in her aunt's wedding, back in 1993. It was a Country/western wedding and there was a lot of denim on the guests.
I have not thought about it until reading this post and thinking about it, realize that I have never seen pink denim again.
Sorry wish I could help..but at least you know that there was pink at one time..
mj