polyurethane article black colorants which comprise a novel blue polymeric anthraquinone colorant , rather than the previous standard polymeric triphenylmethane blue - type colorants are provided . such a novel blend of colorants to produce black colorations within the target polyurethane foams exhibits very low color degradation within polyurthane foams , primarily due to the stability and resiliency of the novel anthraquinone - based polymeric colorant in the presence of high isocyanate levels , as well as large amounts of reactive tertiary amines . a black colorant comprising such a novel blue polymeric colorant , as well as polyurethane foams comprising such a novel black coloring agent and methods of producing such foams are all contemplated within this invention .