Who sells jumbo eggs?

Colored eggs are mostly just sold by small scale farmers. Large scale egg producers don't keep the kind of chicken that lays colored eggs, because they aren't as 'cost-effective'. If you live in a community that has a lot of people with chickens, there's a very good chance that someone has colored-egg laying chickens that sells the eggs. Craigslist is a good place to look, as well as local bulletin boards.