The various morphs, Powder orange, Powder blue, Red koi, or other varieties all share similar if not identical care requirements.
They are decently small, fast breeding and very surface active. They grow to around a centimeter long, a posses a body similar to P. scaber, though they stand taller. The powder morphs are know for their pre molt appearance which makes the appear to be covered in a white powder.
Thanks to their prolific nature they often are used as feeders, or a clean up crew as they are able to easily resist predation pressure. Though you should be careful when considering adding them to a community tank, as they can easily out compete species with similar diets. They *will* deplete even the thickest leaf layer in front of your eyes.
Care:
They're very adaptable, and can survive in even drier tanks as long as they have a proper damp patch to hydrate in. Since you will likely be dealing with a larger colony in just a matter of a few weeks it is encouraged to provide good ventilation to support all the individuals.
As with all isopods provide them with decaying plant matter, preferably leaves, and a source of calcium. Supplemental feed will be consumed really fast by bigger colonies, so I suggest limiting non staple foods, unless you need to mass produce them as live feed, and even then you will likely not find the need to get the breeding rates up.
Feeding:
With this species the issue is "how" rather than "what". You might find it challenging to provide sufficient leaves for your colony, though they can manage occasional lapses in care decently well.
Personal notes:
There were times where I could ship a hundred or so individuals and not see even a slightest dent in their numbers.
They're extremely fast and hard to catch.