The actual wonders included are the Great Wall of China, Chichén Itzá in Mexico, Petra in Jordan, Machu Picchu in Peru, the Christ the Redeemer statue in Brazil, the Colosseum in Italy and the Taj Mahal in India.
However, the Grand Canyon is included on a widely accepted list of the seven natural wonders of the world compiled by CNN in 1997, which also includes the northern lights, or aurora, the Great Barrier Reef, the Harbor at Rio de Janeiro, Brazil, Parícutin in Mexico, Victoria Falls on the border of Zimbabwe and Zambia, and Mount Everest.
I've seen green.