Disclosed is color base composition for coloring keratin fibers comprising: at least two latex polymers independently selected from acrylate latex polymers and polyurethane latex polymers at least one alkalizing agent at least one oxidative dye precursor at least one organic solvent and water wherein the at least two latex polymers are partially or fully neutralized and wherein the at least two latex polymers are present in a combined amount ranging from about 0.2% to about 2.5% by weight, relative to the weight of the composition.
