I have this one Guinea that is this color only.. all others are the same.. That guinea has dark,allmost black feathers. It is odd since he/she is the only one I have. I tried looking it up but ..well my google fu is weak today Its the one in the middle.. as you can see the featheres have a black outline.I think its called Royal Purple. but I dont know.. lol They are helping me with pruning the flowerpots.. lol Editing to add more pics.. these birds confuse me so much witgh all their colors.. I love their little bacon bits hanging out of their mouths Jive McStrut`Stuff hanging with her buddys.She will not leave them..She is species confused.