The major difference can be seen with hatchlings. After a russo has its first shed it almost looks like candy. They are very orange and yellow. They lose that color within a few months though. That's when it becomes harder to tell them from other subtle morphs. A big giveaway is that most of them have a crazy pattern with lots of keyholes and alien heads.
Here are some that I've produced. When compared to normal siblings in a clutch, there is no mistaking them. Easy to pick out as hatchlings for sure.
Russo in the middle..
So you'll know what to look for when you produce babies..
----> Signature <----
*Factoid: "There are no such things as Hogg Island or Columbian boas"