US7947088B2 - Composition Comprising 2,3-Diamino-6,7-Dihydro-1H,5H-Pyrazolo[1,2-A]pyrazol-1-One, 4,5-Diamino-1-(β-Hydroxyethyl)pyrazole and 2-Chloro-6-Methyl-3-Aminophenol, Kits Containing Said Composition, and Process for Dyeing Therewith