The Japanese certainly liked Red back then. Just about every unit was available in it. I can even see a Red Discman there. Useless trivia moment - The Japanese word for Red is Akai so those those are Akai Sonys. (apologies to anyone who can properly speak Japanese).
Nice Catalogue. I have the Sony CFS-9000 and CFD-5 both fully working The Red D-50 discman and the D6-C both fully working too