Why Do Different Types Of Chickens Lay Different Color Egg?

It is all set in their genes when they are born.  Certain breeds will lay brown eggs and some
will lay white eggs.  Some breeds even lay multi-colored eggs and they  are referred
to as "Easter eggers".  Did you know that you can tell whether or not it will be a brown, white,
or multi-colored egg layer by looking at the hens ear lobe?  A white egg layer will have a
white ear lobe and a brown egg layer will have a brown ear lobe.  I have not raised any
"Easter-eggers" so I don't know but are their ear lobes rainbow colored?? Hmmmmmm.