You are totally correct Mark! The head means nothing! A BIG thing I look at is the dorsal crest spines....if there not blue all the way down into the beginning of the tail it's not a hybrid worth investing in, at least unless you just want a pet but I would definitely not attempt to breed a hybrid that didn't have blue spines at least to the beginning of the tail. With that said, I have never seen a 85% hybrid or better that didn't not have blue spines, they may be out there but I have not seen one. Heck scroungh the internet, all those pure lesisi have blue dorsal spines even if there body's are brown or grey! My tip of the day is research your hybrid before you acquire it. I would definetly get photo's of the parents of any hatchlings, otherwise you can just be buying a total mutt.