Why is the gathering of various leaders and dignitaries said to be a gathering of different colours and nations?

Why is the gathering of various leaders and dignitaries said to be a gathering of different colours and nations?

Answer: The end of apartheid regime was a common victory for peace, justice and human dignity. Leaders and dignitaries of nations across the world, irrespective of their colour, race and religion had gathered to celebrate that victory. And such a site presented a rainbow gathering of different colours and nations.