Thanks for the link. All interesting stuff being new to the GFDs.
I will try to get a photo tomorrow, but they are pretty big black blobs on her knees, so it sounds like she is a bit too black.
I am in North Cornwall quite close to John and Michelle Osbourne, who I met this year at a couple of the local shows, so I will see if they will be able to come and have a look once the lambs are a bit bigger.