Not an answer as to if it is true or not, but an answer as to why. Many companies limit the interior colors to certain exterior colors. It is a marketing thing, not an engineering thing. I don't agree with it. In my opinion, if they offer an interior color, then allow it on all exterior colors. If it looks like s**t, who cares, the customer is the one who has to live with it, and what the customer likes is all that is important. But these marketing wienie's who drive me crazy are now driving you crazy.
(PS I have that interior, and to this day, I still LOVE IT.)