At least according to the Apple website, Jet Black can't be had in a 32GB version, so I'll have to go with Black or Silver.
in the future there was an report that they might open it to 32gb since they had failed high rates of yeild in that color, so they prioritized the good batches into expensive models lol who wouldn't like more money ?
KGI’s Ming-Chi Kuo "Due to low yield, piano black may only be offered exclusively on high-capacity iPhone 7 models, at least at first. "
https://9to5mac.com/2016/09/03/kgi-...-12-megapixel-cameras-piano-black-color-more/