Test glaze with slight red wash in the mouth. I think Gecko was trying to see if he could get the same look from the Bone edition, without cutting out the mouth as he had with the artist proof Brown mugs.
I believe this is the same Bone colour Gecko chose for the limited run of 25 after the 25 artist proofs in Brown.
This mug was created by Gecko as a tribute to music great Augie Colon. A white Tiki with red eyes is drumming a small Tiki drum. He has a closed mouth as opposed to the open mouth versions. "Augie Colon" is in raised letters on front base, Gecko logo is on back, as is a birdman petroglyph. Known as both the "Sophisticated Savage" mug and the "Augie Colon" mug. Test glazes have slight glaze variations.