I've seen them occasionally in the last couple of years in mom&pop music stores. I notice those creme pups, as I've used them in the past.
25 years ago, I built a really nice P bass. Exquisite maple neck & board, ash body (candy apple red), and creme Dimarzio pups. The creme was a nice accent matching the maple board. That was a hot, thumping bass. A few years later, I acquired a '74 Jazz, maple/natural, bound/blocked (bone/pearl), and the pickups had problems. A couple of creme DiMarzio J's, and it became a dream bass. It was beautiful and the sound was off the chart. It is the #1 bass I wish I'd never sold. Those pups were extremely hot (high gain). I think that bass weighed 40lbs, but it had a sound that wouldn't quit.
Is it possible to order them directly or have the company direct you to a retailer?