I dont mind crosses, so long as I KNOW they are crosses.
I had a female sold to me as a NosyBe, and was provided pictures of the father who was a beautiful blue. She was mated with a wc nosy male who was a nice torquoise colour. I havent been able to keep in touch with all the buyers of the offspring. But from what I can tell, the majority of the male offspring looked a lot like my wc father, at least two also sometimes give that beautiful sky blue. BUT one of them, from the beginning, seemed a bit different from his brothers, with a few red dots on his chin. I kept him, and now he is a beautiful fellow, with a fabulous personality. But with his red bars, he's no pure Nosy, not as we have come to think of a Nosy anyhow, which means his siblings are not either.
I sold most of the siblings, and I told the buyers that the father was a wild caught Nosy Be, and that the mother was sold to me as NosyBe. Even thought I believed the female was NosyBe as sold to me, I knew one couldnt be positive, given her breeder wasnt someone with a big company reputation, just some guy breeding occasionally for fun, like me. So I made sure to thus word it cautiously to my buyers as I did. I made sure they knew I had no way of being sure of the mother. I priced at $250 (though they sell for much more locally) because I wanted to pick the homes more than I wanted cash. And as far as I know none of the buyers are breeders. Still, its possible someone who bought one of those babies did not choose to hear what I said, and thinks they for sure have a pure Nosy Be.
I know the "problem" wasnt with the male, his mating with a different cb true nosy female tured out 100% lovely torquoise and blue nosy be offspring.
I suspect even in Madagascar there is a bit of cross-breeding going one. Its not like the wild animals care all that much about lineage.
Basically, when I buy an animal as a certain local, I want it to be as true to that local as possible. But I dont mind buying a cross either, so long as I know it is a cross. Some of the crosses are fantastic looking, and since I'm just a hobbist, not in any way preserving the species in case of some disaster in another country, keeping chameleons cuz they are just so kewl and awesome, why not!?