To deselect a group of selected tabs, click on any tab that’s not selected.
While the tabs are still selected, they all have a light, gradient shade of the chosen color. Then, right-click on any of the tabs in the selected group and change the Tab Color as shown earlier. To change the color of two or more contiguous worksheet tabs, click the first tab you want to select and then press Shift and click on the last tab you want to select. You can also apply color to multiple worksheet tabs at once, as long as it’s the same color. When the colored worksheet tab is not active, the color on the tab becomes a solid color.
Once you’ve assigned a color to a tab, it’s displayed in a light gradient of that color when that tab is active.