I did put the color code after the vehicle model on rows in xl-file as attached. All colors should be chosen as economical choise as possible (is Y/grey such most economical for coloured ones?).
These glasses will come to most economically weak EC markets (Baltic states, Estonia), so the pricing of glasses should be the most interesting issue, not the colors (for.ex.). The road network in Baltic region is so bad, that many vehicles have to constantly replace their front windows. So there is no sence to use the most expensive windows every time.
Can you delivery the latest year model vehicles in every brand (so that the gateghory is always updated for the latest model too (Renault, Citroen, Peugeot and Hyundai?)?
Also, is it possible to order one unit per glass in sample order?