When you have layers with a sequence in the name they probably have a relation with each other. To make that relation visible you can use 'Layer Color Transition'. At the start of the command you have to select two colors. After selecting those colors you can select entities. By selecting those entities you select layers. When you confirm that selection the command will change the color of those layers. The first layer in the sequence will be colored with the first color you've picked. The next layer will have a color close to the first color. Every next layer will have a color that is closer to the second color you picked. The last layer will be colored with the second color you picked. This way there is a transition in colors from the first layer to the last.