Once long long ago, people used to hide plain white eggs on Easter. Then One Easter Sunday there was a terrible snow storm and no one could find the eggs! So someone decided to color the eggs. That way if there is ever another terrible snow storm on Easter Sunday, they can still find their eggs.      THE END

If you don't believe that story it could be because I totally made it up. You have to admit, it makes sense looking at the weather we are having now!