New Uniform 4th Option

I was reading the Chron article about the new unis coming out this offseason. The article mentioned four new jerseys with H Town blue as being an accent instead of a main color. Logically thinking, it's safe to assume that the 3 options would be Deep Steel Blue, Liberty White, and Battle Red. But what about the 4th jersey?

My first thought would be the Color Rush option. Though they may include the current jersey as a "throwback". Then I thought about something all new like a black uni as many teams in the league have one. A black jersey with either black or white numbers with H Town Blue as an outline would look sick.

But I wanted to see what everyone's prediction on the 4th option would be. And if you got the choice, what would you want it to be?