we free ranges ours, we had whie, pied and pearl, eventually the foxes got the females on the nests. Males stuck it out 2 more years including a white , before they got to brave and stayed on the coop run 1 time to many where they got eaten. But the guineas are cool.
I just ordered 30 from guineafarm, got the jumbos, pied, white, coral blue,royal purple and Pinto if available. I have set up a kids play house with an auto door hopefully they will home in it as its where i will raise them from chicks so they will know it from the beginning. Have fun and good luck get what you like color wise.