Cars are typically run through a high volume paint shop in batches, as are component parts. For instance, a paintshop will do a batch of Blueprint falcons, is then cleaned and a batch of phantom falcons. This type of batch painting, greatly simplifies the process and makes vehicle painting less complicated, less prone to error and far simpler and cheaper.
I agree that there should be greater customer choice, but given the production limitations that exist, would you be willing to wait 1, 2, 3 or more months (as an example) just so that a viable number of XR's in Blue Pearl can be run through Ford's paint shop??
Most XR buyers will only ever choose a small number of colours (you can see that by the ones you see on the road), plenty of red, plenty of silver, plenty of black with AU models for instance. Increasing the number of colours available becomes an exercise that carries significant cost penalties for Ford and as a consequence certain models are allocated different colour ranges, the colours MOST commonly purchased by those that buy the individual models.
Just my thoughts.
-----Fat Kids Always Win at Seesaw-----