Yellow Rock at The Grand Staircase Escalante National Monument in Southern Utah is yellow but also red, magenta, gold, orange, lime,  blue, purple, rust, maroon,  amber, tangerine, pink, scarlet, black, azure, brass, bronze, rose, brown, plum, sepia, mustard, sapphire, turquoise, peach, myrtle and even zucchini! Yellow Rock is difficult to find and very difficult to…