When flying, this species has large dark brown wings (macroptyerous)
https://www.uwyo.edu/entomology/grasshoppers/colorado/index.html
Found this reference for common grasshoppers of Colorado https://www.uwyo.edu/entomology/grasshoppers/colorado/fact-sheets/
A green Mormon Cricket found on the Continental Divide. Only one in the vicinity, it was hiding beneath an elk bone.