Before you know it, we'll see it manufactured at Dubai :D
Instead of white and yellow, you could have a mix of rosier and yellower gold. The darker (rosier / more copper in the mix) could be in the sides, and the yellowish in the center. Or it could both be yellow gold, with the yellow on the sides being a bit darker (a little bit more copper in the mix).
I'd avoid white gold.
Now that I'm thinking of it, there's also blue gold, (gold-iron alloy). One might actually be able to recreate the exact steem color with it while keeping it at something like 18k.
I like your idea of rosier gold, it's very feminine and very much in fashion too though I think it will match lighter skin complexions.
Steem colors would look nice during summer but has a more dynamic and manly attribute. I'd see it with leather stripe for a rock effect 😊
We could make a male and female version for mr and miss steemit respectively, heh...
👍✌👌