Random tip here,
Remove your original chrome badge and just lightly scuff it with sand paper.
Then put it in a container of ordinary household bleach.
You need to change the bleach every 24 hrs (don’t panic when you see black foam/suds,that’s just part of the process) takes about 4 days to a week.
Strips it right back to the plastic,with no damage at all.
Give it a good rinse,prime then spray and there you have it-black OEM badges.