Good to know. Mine must be eaten by the nymphs and isopods before I notice it.Dead Panchlora and Lobsters commonly turn pink after they die, possibly related to moisture. I've seen a few other species turn pink but these guys regularly do it. Many animals can change to various colors when they decompose.
I'm going to say from experience that healthy animals are never affected. There is no proof of bacteria or fungi, that's just a guess. However, you may notice a lot of pink roaches if you're killing a lot of animals so the conditions may need to be adjusted..... it's a sickness, probably due to some fungi...
You have no real reason to believe the roaches you had die were infected with anything. Roaches can become infected with fungi and the pink coloration may result from bacteria breaking down an already dead animal but the pink coloration is an effect, not a cause. The only reason it matters is new keepers might hear your advice and try to treat a symptom rather than find the cause and lose their culture in the process.I think it is a fungal disease, aspergillosis, caused by Aspergillus fungi.
There are a few scientific papers recording aspergillus in roaches: http://www.ncbi.nlm..../pubmed/9549100
i've had the adults for many monthsAdult Panchlora are somewhat ephemeral. If there are plenty of nymphs and none are dying there is a good chance the adults expired.