I had to look this up for the details. It was told to me years ago when I asked a friend if he had any white jokes.
When you whiteys are born you're pink.
When you grow up you’re white.
When you’re sick, you’re green.
When you go in the sun you turn red.
When you’re cold you turn blue,
And when you die you turn purple.
And you call us colored?
OK, back to prejudices and assumptions
Pete