I recently picked up this exact guitar (serail number) http://www.sweetwater.com/guitargall...custom/s187235

The specs state "Abalone bird inlays" - but it doesn't look like any abalone I've ever seen (little to no pattern). Then elsewhere "Ivory/brown bird inlays"
The interior of the bird inlays appear to be a different type of wood than the fretboard - but actually appear to be some sort of coppery metallic like material.

Does anyone know what material is actually used?

Here's a larger image:

Thanks - KB