[stylz]

I reckon the paint would make the wording stand out a stack more, just wonder how you'de go about doing it? syringe of paint and inject it?

A super fine artists brush should get in there and just clean up any mistakes with Acetone.
For recessed areas i've seen people just paint it and sand it back until only the lettering is left and if you use a reasonably fine grade of paper you can get a brushed effect on the surrounding aluminium which would probably look cool on these. Don't forget to etch prime as paint doesn't stick to ally on it's own.

...might try it myself actually!