I finally dunked what I thought was my black Three Frame Shoulder Tote from 1969 (thanks @whateve for the info) & it turned out to be a very dark blue! Im wondering if it might be the shade “royal blue” from a Cashin colour swatch I found on Google images… 
The hardware faded into an antique nickel & I didn’t polish it because 1) I think the character suits the bag & 2) my Coach tooled tea rose bag charm matches perfectly with the imperfect nickel. The Mexican striped lining didn’t bleed in the dunk (thank you @katev for putting my mind at ease).
I LOVE this bag, I’ll never part with it!
Before:

After:

A direct light shot to show the blue-ness of the leather (might as well be blavy lol):


The hardware faded into an antique nickel & I didn’t polish it because 1) I think the character suits the bag & 2) my Coach tooled tea rose bag charm matches perfectly with the imperfect nickel. The Mexican striped lining didn’t bleed in the dunk (thank you @katev for putting my mind at ease).
I LOVE this bag, I’ll never part with it!

Before:

After:

A direct light shot to show the blue-ness of the leather (might as well be blavy lol):
