Ray Andraka wrote:

I had marks on my tires (changed tires and haven't gotten around to
replacing the marks) on my PA32.

This whole thing reminds me of when I worked at the local NASCAR track.
Everyweek we'd "paint the tires", that is, put a dab of paint on the
tires as the cars qualified so we knew they started the race with the
same tires. Now the teams with money ran new tires every week, but
some had lots of dots on their tires. I asked the track promoter
where he got all the different colors of paint (we switched every
week) and he said he just goes to Home Depot to that clearance rack
of mismixed paint colors and grabbed a bunch of those periodically
at a buck a can. The colors were never really duplicatable :-)