. "\"Any process that activates or increases the frequency, rate or extent of melanocyte differentiation.\" [GOC:go_curators]" . . "positive regulation of melanocyte differentiation" . "positive regulation of melanophore differentiation" . "up regulation of melanocyte differentiation" . "up-regulation of melanocyte differentiation" . "upregulation of melanocyte differentiation" . . . "activation of melanocyte differentiation" . "stimulation of melanocyte differentiation" .