On a map or topograph, what does green stand for, what does blue stand for, what does yellow stand for, and what does brown stand for

On a map or topograph, what does green stand for, what does blue stand for, what does yellow stand for, and what does brown stand for

Color is defined according to the different geographical features and features. Generally, the blue color above the map or terrain indicates the water area, such as ocean, lake, river, etc. green indicates the land. The deeper the color, the lower the terrain. The deeper the yellow, the higher the terrain. Brown indicates that the terrain is mainly plateau and the terrain is very high