CLEAN : Cape Town institutions illuminated in purple for Tutu death

The video discusses a gesture to honor a remarkable man by sending messages of memoriam and celebration. It involves lighting up iconic landmarks in Cape Town, such as the City Hall and St. Georges Cathedral, in his signature purple bishop's color. The aim is to spread this image globally, encouraging people worldwide to remember and celebrate his life.

What color is described as synonymous with the bishops?

What is the overall purpose of the message being conveyed?