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...it's very difficult to source 1" threadless stuff these days. Even in the used parts stream, not a lot of it was made, because most stuff was getting made with 1 1/8th sterrers by the time threadless came into vogue. FSA still makes and sells a 1" threadless in both black and silver at prices mere mortals can assume.
Here is an ebay link, but other sources sell them. The only other ones I know of that are not overpriced come in black only, like Henry ford envisioned.
The stem workaround most commonly used is to buy a 1 1/8 " threadless stem, in the exact finish and length you require, and them shim it on the steerer tube. The shims are commonly available from a number of sources. Anywa, thta's how I have done it in the past. and I have access to a bike co-op, with a huge supply of used and castoff stems. You won't come up with what you need in a 1" threadless stem in length, angle, and color without some minor miracle.