Just a photo I took a while ago.
From the left: ‘Chauffeur’ glasses by Einstoffen made of walnut wood, Luddite Everdraw with walnut barrel, STAEDTLER 925 25-03 with walnut barrel, walnut.
I like the walnut.
Addendum: I think the walnut used for the glasses is similar to the wood used for the Pilot S20 pencils, i.e. thin layers of wood glued together with resin to provide the necessary strength.