Glad that the project came off OK. For what it's worth, this thread started at the more normal solution for this kind of problem, a paintfill. It's commonly used on golf clubs and other pieces that have engraved or etched markings that you want to highlight.
It's basically exactly what neurotictim asked about at the beginning. You need model paint (Testor's like the kind you used on models when you were kid is fine) and the proper solvent for it. You want to pull the pickup and, in a concealed spot test to make sure that the solvent doesn't soften or damage the surface of the pickup.
If it's OK, then you wipe the logo area with the solvent so it's clean. Then, after it's dry, you use a brush to fill the logo area fully with paint. You want to make sure that the paint fills the entire logo area and it's OK if a little is out on the top of the pickup. Finally, while the paint is still wet, you dampen a cloth with solvent (not dripping wet, but damp)and gently wipe the excess paint off th surface of the pickup. If you do this properly, the surface should be cleaned off and the engraved area should be untouched. Let it dry and you're in business.
At the factory, Alembic probably uses a foil stamping machine to highlight the logo. That foil is shinier than regular paint, but would be hard to reproduce without their setup.
There are actually a class of highly metalized model paints which you paint on and can polish to a shine after they dry. That might give a result more like the original logo, but this kind of paint is in a different (and stronger) solvent that might not lend itself to the paintfill process.
David Fung