made Color.multiply not allocate a new Object if the color was unchanged or the new color is black.
made Color.multiply not allocate a new Object if the color was unchanged or the new color is black.

andreas-eberle/settlers-remake,jsettlers/settlers-remake,Peter-Maximilian/settlers-remake,andreas-eberle/settlers-remake,phirschbeck/settlers-remake,andreasb242/settlers-remake,jsettlers/settlers-remake,andreasb242/settlers-remake,andreas-eberle/settlers-remake,JKatzwinkel/settlers-remake,phirschbeck/settlers-remake,phirschbeck/settlers-remake,andreasb242/settlers-remake,jsettlers/settlers-remake