What's funny is that when the 69 1/2 RR and Super Bee 440 6 Pack/Barrels came out, I did not like that wheel treatment. Now I love it. In fact, gloss black is the most popular color when I powder coat steel wheels for people.
I like those years of cars too. Myself, for steel wheel color I prefer the wheels to be body color. I'm sure that the gloss black looks awesome, it's just that I'm not a big fan of black.