I have since rubbed the "clear coat" off the aluminium bits around the edge and the tops of the letters and it looks 100% better. So my method, if you need to do this yourself, I would get them vapour blasted or soda blasted as it won't damage the badge, make sure you clean it off first, I use latex throw away gloves and Acetone with paper towels and some ear buds to get in between the letters if you want to, I just soaked the badges to get rid of grease and fatty acid your hands give off, once clean I pushed the badges into some polystyrene, (it doesn't work too well) I would recommend some sort of box that will hold the badge pins. So then a rattle can coat of primer etcher, this is a must.
So as happen to have an air brush system here and I use Wicked colours for my paint, water based, mixed a small amount and cut it 50% with their High performance reducer. They are small bottles about 60ml and don't cost a lot of money. so spray the whole thing (in this case) blue or whatever colour you like, I also mixed in some sparkling pearl powder (not much sparkle). Let is dry at east 24 hours and the again some rattle can clear I have two coats, allow 15 minutes between coats, wet the second coat put em somewhere safe and let them dry for two days, now you can start rubbing the paint off the raised letters and the exterior, I used Abranet 240 to take off the clear, then 600 and then on to a thousand Looks great better than in the last photos. :lol: