I haven't seen a ton of them, but generally cinnamon x lesser or cinnamon x butter creates a stripped animal rather than a black back and generally have dark spots in the alien heads. Not to say it couldn't happen the opposite way around, but they do not look like typical cinnamon x lesser to me in terms of pattern.
When I first saw the pics I was wondering if there was anything else in the mix, so they very well could be. Hopefully someone with more experience with that combo can chime in for you.