My customers tell me they don't care about color, and they are men. When their wives are with them though, they oooh and aaah over all the pretty colors! I have four coops, each with a different genetic egg color rooster. I have a total of around 45 birds at the moment. I have dark brown, light brown, speckled, green (olive), blue and everything in between. I love to hatch my own chicks. It's a lot of birds but for me it's fun and interesting.
I charge different prices for different people. My coworkers only pay $3/dozen; people I don't know pay $4.50/dozen and $6/18 count. I keep an eye on current prices so I know when the market fluctuates. Make sure you are charging enough! Don't undercut yourself thinking that's an incentive to buy. People won't buy if they think the price is too low because it might mean they're buying an inferior product. I have people come from as far as 40 minutes away for my eggs. And some of these people are seriously wealthy. I am always amazed by that! But I am happy to sell to anyone who wants them.