Ollie's (and Dave's) Dad, can indeed father liver roan and blue roan, he can also father orange roan and blue roan and tan depending on the genes the bitch is carrying... which reminds me I still haven't sent you those pics sorry! Will do.
I've been told that dark blue roan is dominant over light blue - Dave is a very dark blue and although Dad Harry is a lot lighter, Dave's mum was a dark blue also and I think most of his litter are very dark blue.. There weren't any liver roans in his litter or the first litter that his mum had with Harry though, so maybe Dave's mum doesn't carry the liver gene but Ollie's mum does?
Hannah xxx