To add a color overlay to a panel:
- Click on the Color Overlay icon below the panel at the right.
- Click the color overlay of your choice.
If you'd like to create coloring pages, follow these simple steps:
1. Open comic maker.
2. Select a background.
3. Click the hollow rectangle with the stars in it just below the slide you're on.
4. Select the black and white option (you may need to scroll to the bottom, there is an option with more black than white, and an option with more white than black)