The whole reason for the selfsufficientish website was to offer a place where anyone can ask, HOW DO I...? So who knows why it has taken us so long to have a HOW DO I? section, but here it is. So if you want to know how to do anything selfsufficientish then here is the place to ask.
I left my tubers (Maris Piper) in a light spot but not in direct sunlight. When they had chitted I noticed some of them had a very pale tinge of green on the skin. I planted them anyway but am now informed my whole crop will be poisonous.
As far as I'm aware it should be fine. All pots have the poison in anyway and you aren't going to be eating the green one. Would be interested as to what others say, but I'm sure I've had crops from potatoes that were slightly green before.
Somebody's having you on. Your entire crop will be absolutely normal. Greening is a natural action of light on potatoes, and it would be difficult to avoid when chitting (you want green shoots, don't you?).
Don't worry in the slightest.
Mike
The secret of life is to aim below the head (With thanks to MMM)