Here's a quick tutorial on how to paint up Uthwe Eldar. Back in the day (2nd edition) I had an Uthwe Eldar army. I sold them on ebay when I got back into 40k a few years back. That was back in the metal bodies, plastic arms days... yikes, those sucked for coming apart during transport.
Anyway, here's a quick tutorial on doing the black armour with bone contrast.
How to Paint Uthwe Craftworld Eldar
by Paul Graham | Oct 12, 2013