Yep, part of a packet of mixed-color potatoes. They were the only ones I had, so that's what I used.Are those purple potatoes?
The dressing is cider vinegar, sugar, mustard, sour cream, and some cooked egg yolk mixed up together, celery, celery seed, salt, and pepper, and the rest of the eggs chopped.
Tastes great, but those colored potatoes really don't make for an appetizing salad.