I don’t know how particular you are but if you want to experiment here is what I did on a Merc55 a few years ago. First paint the entire tag. Let the paint dry for a week at least. Then gently scrap the paint off the raised letters with a razor blade. (Hope the pictures will post) Have some before and after pics to show you.

dale

• This reply was modified 5 years, 10 months ago by Mumbles.

Actually for a flat part, paint the part whatever the base color should be. Wait for it to cure, a week should be good, then create a sanding block larger than the plate and add 600 grit wet/dry sandpaper to the block and this will sand the high spots leaving the recessed areas with paint. You may need to move up to a more fine grit to get the desired finish. Use double sided sticky tape to hold the part to a flat surface.

I just checked my RDS-21 parts and the tag is crumpled
Maybe find one from a parts motor?