Hard to tell for sure from the photos but I'd have to vote ocellaris ... ocellaris have darker eyes while the percs have a dark iris with a light outer eye. If the ring around the iris is dusky to dark (i.e. not light), then you could be pretty sure that they are ocellaris.
As for the color shift, if these were CB then you probably bought them when they were filled with lots of pigmentation. If they go on a lighter pigmentation diet, they will lose the brightness. The color shift could also be based upon the host / tank they're in, as clowns will change appearance (darkness / lightness) if they are moved or change hosts.