"Dear white fella" joke

There are a Couple of things you should know
When I'm born, I'm black
When I grow up, I'm black
When I go in the sun, I'm black
When I'm cold, I'm black
When I'm sick, I'm black
And when I die, I'm still black.
You white fella
When you're born, you're pink
When you grow up, you're white
When you go in the sun, you're red
When you're cold, you're blue
When you're scared, you're yellow
When you're sick, you're green
And when you die, you're gray.
And you have the nerve to call me colored???