Yeah its common that they look the same, it all depends on what the rabbits carry.
Take my own rabbits for instance, they had 12 kits, 5 were black like their father, 4 were brown sable like their mother and 3 were red-eyed white. It all depends on the genetics. Sasuke and Aroma both carried REW, Sasuke at least carries blue but since Aroma didn't, it didn't show in the babies.
Many breeders going for one color tend to only get one or two different colors/markings in their litters since their rabbits tend to be quite purebred in color (mixing different colors can make them bad for showing for instance.. I had that problem with my black bunnies because they carried sable, they were almost gray)