According to the recently posted pictures of the configurator you are. They don't offer a dark wheel in 19" for the S either though.
This is an aftermarket thread though and there are LOTS of aftermarket options out there.
The TST wheels - what is the finish on them? How do they compare quality wise to the Factory wheels? I'm expecting to have to configure my MX in the next couple months (I reserved in sept 2014) and would love to know what the options are. I live the look of cyclone wheels but living in CT really puts a damper on 22" wheels and the $4500 price tag is a little steep for the option.