My two newest babies are a pair of brothers from a Russian Blue litter. There was a really noticeable difference between some of the babies coat colors, though. Some were a very light blue, and the others were a really dark charcoal blue. I have one of each, my dark boy is Ceres, and I was almost convinced he was just and off black, but looking at him in the sunlight right now while he's climbing all over my lap and keyboard it's really obvious he's just very dark. He is berkshire, and has a wedge blaze with the tiniest white tip on his tail, but otherwise his coat looks very uniform without any real noticeable ticking along the hairs. His brother Sedna is a double rex, and is missing most of his fur on the top half of his body atm, but has a pretty thick coat along his underside, and is completely self. His fur is much lighter and much bluer than his brother's, and has fairly noticeably ticking on the hairs when you look close enough. Is it possible for both of them to be Russian Blues and just have a huge shade difference, or is it more likely Ceres is just a really off-shaded black? He definitely doesn't seem that way when compared to my black rex girl who has very similar markings, but I'm not sure. I'll try and take pictures to add to the thread, I'm not sure how well it will show Ceres' color, however.