No, not to my knowledge.Matt... thanks for the extra details, that helps me a lot. And of course the pic, as they say, is worth a thousand words. Words describing color is SO hit and miss. If you ever put some on a scale it would be fun to know whether they're over of under the 2 oz. mark. I didn't realize you're doing Blue Langshans until I read your footer line. The blue and buff standing alongside each other must be very pretty.
And CL... I appreciate your input on this, too. It's so easy to get confused when discussing color with a variety of people. The chart I've seen for Marans is helpful, but I haven't seen one for just "regular" brown eggs or "light" brown eggs, etc. Does one actually exist?