| http://www.w3.org/ns/prov#value | - The coloring agent according to the present invention is selected from various known dyes and pigments including carbon black, lamp black, iron black, ultramarine blue, Nigrosine dye, Aniline blue, Phthalocyanine blue, Hansa yellow G, Rhodamine 6G, lake, chalcoil blue, Chrome yellow, Qunacridone, Benzidine yellow, rose bengal, tri-aryl methane dye, mono-azo dye, and dis-azo dye which may be used a
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