'Reddish' or 'bronze' often makes it into the list of possible colours for these frogs. Check out the care sheet if you haven't already Frog Forum - Pacific Chorus Frog

That said, you should never expect to make any fine colour judgement from a photo that's probably not colour corrected on your probably not colour calibrated monitor with your probably not colour managed web browser. If that is 'white' paper in this particular photo, the white balance is seriously out of whack (there's way too much red). So definitely don't make any judgments based on this pic.