Saving sun-greened potatoes for seed next year?

I didn't hill my potatoes this year and I have a bunch that are sticking out of the ground.  They're purple fingerlings so it's hard to tell if they're green but I assume they aren't good to eat any more.

Can I save those "sun kissed" potatoes for seed for next year and eat the subterranean ones?  I'm curious if that might selectively breed a variety that likes to breach the surface.  Or if the sun kissed spuds might not sprout well next year?

I'm not sure if they wait in the cellar just as well as any other spud, so I can't speak to that. But remember the genes are more or less constant within a plant, so all the tubers on one plant (and every other plant with the same parentage) are identical, save for the occasional environmental mutation. And if you're just saving tubers year to year, you're not really breeding anything.

Thanks Christopher!  I'll harvest them and keep them separate in the root cellar.  If they make it to spring, they'll be my seed potatoes.  Thx!

They keep fine - no difference from nongreen potatoes that I've noticed. I often use them as seed the next year. I figured, like Christopher, that they're clones anyway, so no worries about selecting for undesirable traits.

I store and plant "greenies" for varieties I like. Works fine.