The color is way off, just green and yellow.
I tweaked the green a bit, and actually there are four colors… green, yellow, blue and brown
Were you trying for a surreal look? I have been to the canyon about 6 times and never seen it look like this. A helicopter ride and views must have been fantastic.
Primarily, I was trying to maximize the visual separation of elements. The colors are pretty much as seen but the hue, saturation and lightness were manipulated