What is painting with pigment mixed with water/egg on a thin layer of fresh lime mortar or plaster often made during the renaissance and other early time periods?

What type of celebration do the colors in manet’s painting suggest, in contrast to gauguin’s? masked ball at the opera by edouard manet courtesy national gallery of art, washington. breton girls dancing, pont-aven by paul gauguin courtesy national gallery of art, washington search each photo up who ever answers it gets 20 points.