Campy shift cable differences

[mattscq]

I had originally set up my 12s group with these darker pewter colored shift cables that were given to me as part of the group (cables were new but were part of a second hand group). I recently swapped the shifting cables to new ones I bought and noticed the new campy ones were a shinier silver.

I can’t seem to find any info on this. They both work fine. Any idea what the differences are? I assume they’re all genuine campy parts.