1. A method of forming a dye image comprising: imagewise reducing a cobalt(III) complex to cobalt(II) to form an immobile cobalt complex image in an imaging layer of a photographic element, forming in the imaging layer an immobile catalytic manganese complex image which is a reversal of the cobalt complex image, said manganese complex image exhibiting a substantially higher degree of catalytic activity than said reversal immobile cobalt complex image, and employing the imaging layer containing the immobile catalytic manganese complex image and the reversal cobalt complex image as a catalyst in a peroxide redox amplification reaction occurring at the site of said manganese complex image to form a dye image.