How to Change the Tab Colors in OneNote 2013

For a Notebook

1. 
   Open the OneNote notebook switcher and hover over the name of the notebook you'd like to switch the color to. Although it matters whether a notebook is open or not on your device, for those notebooks already present on your device, as long as it's on the list, it's considered to be "open" and active and that's what you want!
2. 
   Right click the OneNote notebook name you'd like to change and left-click "Properties".
3. 
   Double-check the notebook name is the one you'd like to change the color of based on the name given in the "Display name" box.
4. 
   Click the "Color" drop-down box just below "Display name". At first you'll see it's former color, but momentarily, you'll be able to make the change.
5. 
   Click the new color choice out of the available options. For notebook colors, you're limited to those colors you'll see the sixteen available colors on the drop-down box. Try not to make the notebook color the same as any other notebooks in your notebook list.

   1. Although not named on the list until you hover over each color, all sixteen notebook colors correspond to those colors used for notebook folders which include: blue, yellow, green, red, purple, cyan, orange, magenta, blue mist, purple mist, tan, lemon lime, apple, teal, red chalk and silver. However, there needs to be a color for the notebook, for the notebook to exist, and unlike the folders, you won't see a None selection choice here.
6. 
   Click the "OK" button to save.
7. 
   Confirm your notebook is now colored better in the list. Open the notebook's drop-down list and look at the said notebook's new color.