I painted mine, I think that the closest match to the original color is SEM storm gray, but there’s a thread on here demonstrating the difference between SEM warm grey and SEM storm grey. I felt (as that poster did) that the warm grey better matched some of the color change that occurs over time so may be a better option if you’re not refreshing every single piece in there. Maybe get one of each and see what looks best on a test piece of paper