1923 Ban Johnson Baseball - Stitching Color Question

[ATP]

Could use some help just to make sure I am describing what I have properly. I got this game used ball from 1923 in with a group of team signed baseballs of the era. It has an interesting inscription that it was given to the owner by Connie Mack on 4/19/1923. My question is regarding the stitching. I suppose it is probably just faded and oxidized, but the red stitching looks drastically lighter in color than all of my other Ban Johnson balls from the era that are red/blue stitched. It almost looks tan and blue stitched. I have a dozen or so from similar years and none have faded the red stitching to this color. Is there a type of variant in stitching out there that I am unaware of, or is this just fading of the red that you don't see as often? The last photo is of a different ball I have from the same era in order to show the contrast in the red stitching. Appreciate the help. Thank you.