Color choices? Consider yourself lucky! In Canada you couldn't order a Platinum White one in 2017 (Magnetic, Tuxedo or Spice only); I doubt it will change in 2018.
Ford Canada's website will not allow you to configure a 2018 yet.
I have noticed, though, there has been a major surge in 2017 ST stock: it shows 28 ST's within 150 kilometers, where there were none a little while ago.