I recently purchased a '72 XLCH. The bike came with a spare 1960s Sportster turtle tank which I'm considering using on the bike. It's a dark blue, the paint is decent, a few chips, appears to be original factory paint with gold pin striping. Did some searching and came up empty as to what color this was called back in the day or where to obtain it. I'd like to repaint the fenders (paint is trashed) the same color and touch up the tank if possible. Are there any historians out there that recognize this color? Thank you very much.