Except the website is not 100% accurate to what you can actually order at a dealer via the dealer's ordering site. There is a certain level of customization you can do with options that simply don't exist on the website builder.
For instance, for the longest time some options removed other options. Like adding the night appearance package used to remove the bucket seats, for whatever reason. And you couldn't select the sport appearance package with any motor other than a diesel. The website was a disaster that made no sense.
Ford's is/was the same way. I was building a F250 and any time I added the black trim package it reverted the color of the truck to black. Even though I confirmed with the dealer that you could add that package to any color truck.
What I'm saying is don't take the website builders as gospel. They're anything but accurate.