The Youngstown cabinet and sink pictured above is like the one in the house we lived in until I was 2. The faucet and hardware were of course different as these have been replaced on the one Mopar65 has.
When I worked at a plumbing supply co. that was an Eljer distributor, we would sometimes get requests for custom colors. It could be done as long as the color was in current production on some product line made in that facility, but at least 10 of the items had to be ordered. The Eljer rep said they could develop other colors, but the order had to be in the tens of thousands of dollars, and that was back in the late 80's, so it was rarely if ever done.