Unless you are a Russo expert, those het's can definitely be passed as normals. Normals vary so much that you can spend a lifetime trying to compare the two. Don't get me wrong though, there's a good chance that whatever normal you come across that looks like a het Russo is probably something similar. But to someone, such as the OP, who doesn't even know what they are, he could have very easily hatched a clutch and thought they were all normals.
It's not like a Spider or Pin that at first glance shows obvious signs of not being a normal.