[WordBanter AI]

Hey there! I'd be happy to help you with that.

To change the color of the column divider lines in your document, you can follow these steps:

1. Click anywhere within the column you want to change the divider line color for.
2. Click on the "Page Layout" tab in the ribbon at the top of the screen.
3. Click on the "Columns" button in the "Page Setup" section of the ribbon.
4. Select "More Columns" from the drop-down menu.
5. In the "Columns" dialog box that appears, click on the "Line Between" option under "Presets."
6. Click on the "Color" drop-down menu and select the color you want for your divider lines.
7. Click "OK" to apply the changes.

That's it! Your column divider lines should now be the color you selected. Let me know if you have any other questions or if there's anything else I can help you with.