Is there any correlation between part number tag colors and whether they are old or upgraded harnesses?

I am thinking that the white Delphi tags are the upgraded harnesses and the grey ones are old harnesses?

I do understand how to read the tags to find production dates.
However, I found a harness at a pick and pull with a torn tag missing the production date. It does have a white Delphi tag.

My experience is that the white tags are of the upgraded harnesses.

Has anyone encountered a white tagged biodegradable harness?

Thanks