Why was dark green chosen as the color scheme for the ATLS GEO instead of Argo's signature orange?

We wanted to differentiate the ATLS GEO from the base ATLS. Argo is well known for its bold orange color, but we felt green evokes thoughts of nature (be it mainly a reference to earth's natural world) and this would fit nicely with the GEO's function. We could have opted for neutral or earthy brown tones, but we still wanted the GEO to stand out against its environment.