All brown, brown and green, or green are all common color variation of the Caatinga horned frog.
When the death of a pet occurs it is disturbing. When the death of a healthy pet occurs it is infinitely more disturbing. And this latter occurred a while ago when my male Caatinga horned frog, Ceratophrys joazierensis, was killed by my female during a breeding attempt.

There is always a chance of such things happening when cannibalistic frog meets cannibalistic frog, but this surprised for vocalizations had led to amplexus and I was reasonably sure that all was well in the rain chamber. But this time I was wrong. For some reason amplexus was discontinued, and the female turned, grasped the male by one hind leg and faster than I could intercede swallowed the male to midbody. By then I had them in hand, pried her jaws open, released the male (who at that time seemed none the worse for that harrowing experience) and separated the pair.

But despite there being no outward sign of the aggression something detrimental had happened to the male because from that day, until his death 2 weeks later, he simply sat in one spot (not unusual for a horned frog) and he never again ate (very unusual for a horned frog).

Since that time I have been looking for a replacement male. I know this taxon has been bred in captivity so there are some out there somewhere. But until now I have neither seen nor heard of any being available. But I’ll keep looking…