Non-gold plated connectors are usually only good for a few plug/unplug cycles.

I use a digital label maker on my leads, but the other option I would consider, Hanson hobbies carries tools and components to make your own servo leads that are of higher quality than the components I've bought from LHS.

In addition to the 1x3 housings typically used on servos, they have a full range up to 1x10 or 2x5 that accept the same gold plated pins. The downside to that would be sleeves are only available for the 1x3.

They do also have red and blue sevro connector housings in addition to black.

Personally, just using a label maker works best for me.