Reversible color panels didn't come along until much later. Until the 19 or 20 series, KitchenAid dishwashers were ordered/sold without panels of any kind and the customer bought the panel, color or custom-panel fram that they wanted. Most dealers would "package" price them with panels and add on for stainless steel, custom frames, etc.
The store we've been to quite a few times in Early, IA had a huge stack of KA dishwasher panels - new in the boxes still. That's also where I found my display panel for the 18 series - plexiglass panel, lights and frame kit for the multi-level washing display in the store. That store was a goldmine and a nightmare all rolled into one!