In the distant future, Luna colony rebelled and ruled the Solar system. They abandoned the concept of “all men are created equal” and created a genetic caste system: the Gold would be on the top of the pyramid to rule, Red the bottom for hard labors, and many other colors in-between. Specialized training, implants, and genetic modifications were common for the colors to perform their jobs better. And 700 years passed.
One of the Red, Darrow, rebelled and started an epic struggle of the lone lowest against the Olympic gods. The books carved human spirit, love, brotherhood, power, and greed. It threaded betrayal, wars, martial arts into the story arcs. They were addictive.
They are also bloody and violent beyond the “young adult” level.
Pierce Brown clearly shares my taste of whiskey. Chuckles.