Okay, that has to be it :) I've been wracking my brain trying to find anodized copper (can't find anodized aluminum in 22 gauge and the 24 gauge is way too soft), since anodized niobium is pricey.

Depending on what you're doing, www.theringlord.com has enameled and silvered enameled copper wire. The silvered is silver plated then enameled so it's a lot brighter. But, it doesn't come in 22 gauge.