I'm guessing he is a blue smoke, if you have a shaded silver kitten.and the father is not a blue, he's a really light grey+light stripes, I was surprised with the kittens colors!
All red or cream cats have tabby markings, even if they are genetically solids. The solid gene doesn't have any effect on a red or cream cat.oh! and the cream one seems to have some stripes, so must be a cream tabby?