The colors Teal and Heartland Red alone are enough to convey the team's identity with the meanings they carry.
As you know, Turquoise (or Teal) is the color of hope. Hope does not have a fixed color, yes. It constantly changes color. It turns yellow as it diminishes and turns green as it increases. It has no definite color. But in general, it represents hope.
Heartland Red, on the other hand, is a different matter. It represents determination.
The flow of the Missouri River in the logo is also a metaphor that fits the colors because no river that lacks determination can reach the ocean.