Got it haha, was hoping the darkness may have impaired your judgement, with them usually being bright and yellow haha.
Now id do a spot the snail in my Goldfish tank, but one is brown bread, and the other is on the front glass haha!
As for the Ramshorn snails breeding, I think they have to breed out of water, when I first got mine, they kept laying eggs, but my water is always high so they could never lay them out of the water. They have given up trying now. I too have never seen blue ones, found some on eBay
lol, but they just look like regular black ones to me. Nobody else is selling them, so I question if they exist...