I've spent the last 27+ years and counting in, on, around and under tanks, never seen US tank gun tube cleaning rods painted. They were always that dull dark metal color, similar to over sized M16 cleaning rods. The way they get used, it's not like they rust; they were always covered in whatever type of bore cleaner the EPA let the Army use.
Good to see you Kevin. I start terminal leave on April 1st and my retirement date is July 1st. I'll be hanging my hat up with 27 yrs, 10 months and a handful of days. Then I'll have to get a real job.