Most lents I've seen at least have the freckling on the face. Mine didn't have many spots along the body but they did have freckles in the face. They were a gorgeous orange-red coloration with a bright black and orange opercular spot, as well as a matching spot on the dorsal peduncle. I can tell you that when they were stressed or moved, they would wash out to a dull gray color and only the black spots and freckles would be visible. Once comfortable, as long as they were in clean water, their colors would come back. So if they are lents, it could just be that they're stressed or in need of some TLC.
Like Scatocephalus says, pictures would be the best way to be sure.