RaZias - the photo you grabbed out of that topic is actually of an adult Alueropoda. No hybridizing needed to get that color and pattern! I have them as well and I highly recommend them - they are a gorgeous roach and that deep shiny mahogany color is striking in person. So are their extra-long antenna.
My first roaches are reported to be hybrids - I never did receive confirmation of which species since I got through a pet ship who got them from another breeder, but we think they're G. Portentosa x G. Oblongonota.
They are HUGE. I really do have to dig through there to find the second brood that should be adults now to measure them against the "giant" G. Oblongonota that I have, but judging by the ones I've seen on the glass after the lights go out I'm pretty sure the hybrids are longer, wider, and heavier. They're not fast breeders though and the nymphs are often still born or suffer deformities while growing. I don't have nearly as many in there as I should, at least compared to the other species I keep.
I'll get new pictures and post later, but they're normal looking. No great colors, mostly muted browns and black. Hit them with a flash and there is a lot of red in there, but it doesn't show under normal lighting. Their heft is the most interesting thing about them. Personally, I think they very much resemble Prinsicia - I had one lone P. vanwaerebecki female that was left alone after her three tankmates died, and after a while I realized I wasn't going to be getting her new friends anytime soon so I tossed her in with my hybrids. She looked just like them, only smaller.
The biggest problem for me having hybrids is what do I do with them once I have too many? Would it be ethical to sell them? Should I only find someone who will use them fodder for something? Could I offer them as cool giant pets to someone who might be interested and might not really be into raoches? Should I ever sell them to someone else who plans to breed them? You don't want them getting loose into the community and being sold as a pure strain of something, as then it could potentially ruin a whole portion of a captive species. But at the same time, at some point soon I'm going to have too many for my 30 gallon (I can't stand overcrowding) and then it's sort of - what then? Not a fun worry to have!