anchor: Italian architects Renzo Piano and Gianfranco Franchi and Englishman Richard Rogers deliberately left the building's service systems visible and color- red for the transportation, green for the water pipes, blue for the air-conditioning ducts, and yellow for the electrical system.
positive: Red is for transportation, green is the water pipes and blue for the ducts for the air conditioning.
negative: Italian architect Domino DiCocco and Liberace deliberately left the building's service systems.