With Shift Pro you can change the background of your site to a texture. To add a background texture:
- Visit the Customizer (Appearance → Customize)
- Click on the Background section
- Click on the Background Textures section
- Click on a texture to preview it
- Once you've selected a texture you want to use, click the Save & Publish button to save your changes
The background texture you selected is now being used as the backdrop for your site.