Loving my 40th...the purple hue in certain light is great.
If you ever see pics of
Nitrouz's Z, his photo's capture it the best.
The Alcantara on the drivers door does get dirty from elbow/knee but if you clean it often, its great and doesn't seem to fade. I usually just use water but there is something with woolite as mentioned (or my detailer guy cleans it well for me)
I was going to say if you want the Nav try to find a Canadian 40th but we only got 120 so even more scarce
Also if staying stock for awhile I find the fact that the wheels are close to the 40th color lets you not feel rushed to buy aftermarket wheels like with some other colors.