This has worked for me:
Find a pencil eraser, the kind I prefer are the real soft white kind. I have one of the long adjustable types that is only the eraser. I cut off about 1/2 inch to use.
Next, put a little bit of silver paint around the eraser, enough to stay wet, but not so much that it will drip or smear.
Finally, roll the painted part of the eraser over the raised detail. The eraser will contact only the highest points of the script/detail and the paint will come off, leaving a neatly painted detail.
Sometimes I will put some masking tape around the script on the body in case the silver paint gets a mind of its own, but with practice, you can get the paint only on the areas you want.
HTH