Step 10: Click the Background button (Page Design | Page Background group) and insert the '10% tint of Accent 1' background. In publisher

1. Open Publisher and open the desired document.

2. Go to the Page Design tab at the top of the window.
3. Locate the Page Background group, which is located towards the right side of the ribbon.
4. Click on the Background button, which is represented by a paint bucket icon.
5. A drop-down menu will appear. Select "More Backgrounds" at the bottom of the menu.
6. The Format Background task pane will open on the right side of the screen.
7. Under the "Fill" section, click on the "Color" dropdown menu and select "Accent 1."
8. Scroll down the options and click on the "10% lighter" option. This will apply a 10% tint of Accent 1 as the background.
9. Review the changes in the preview area of the task pane to make sure it meets your requirements.
10. Click the "Apply to All" button to apply the background to all pages in the document. Alternatively, you can click the "Apply" button to only apply the background to the current page.
11. Close the Format Background task pane.
Your Publisher document should now have the '10% tint of Accent 1' background applied.