You can use EasyMapMaker Advanced Options to style your map. You can use one of our 15 predefined map styles or you can use your own. Map styling allows colors on the map to be changed and items to be hidden. Our predefined styles include dark maps, light maps, enhanced colors, and label changes. Google's Map Style wizard allow map styles to be created easily. Snazzy Maps has a variety of user created styles for use as well.
Create a map and view the advanced options.
Save your style and it should be good if it passes validation.