Well, I don't think anyone is going to convince Robert to keep it white... but other than pink there's turquoise... or even a striped 50's pastel rainbow... which would be quite a statement.
In any case it looks like a very fun machine. I like those stainless racks. I have noticed that the vinyl ones in my '57 KD-2P and in the 17A are in great condition, no peeling, so I'm wondering if maybe KA used a better grade of vinyl coating in their older dishwashers. The 21A I have, the vinyl on the racks is peeling off in multiple places, with the upper rack on the 21A actually having rusted through its supports. I have considered that it would be possible to tig weld up a replacement rack entirely of stainless, but it would be a lot of design work - and I'm pretty awful at tig welding. And the top loading KD2P must have a coated rack, anyway, since the racks rest directly on the porcelain tub.