Yes I agree when young, they are the same color... But the fish in the pic is I believe, an adult not a juvy...
Mbunas can be tricky when identifying them bec they breed easily with closely related species... also there are many variants of the same species...
Commercial breeders can easily "unpure" the strains...
So unless you get an F0 or F1, then the shape, color, etc may look different. I personally think Mbunas are hard to identify.