How do I customize closed captions on my Apple TV?

To customize the closed captions while using The CW app on your Apple TV:

1. Go to Settings > General > Accessibility. 
2. Select Style.
3. Select one of the predefined styles: Default, Large Text, or Classic.

To create your own style:

1. Go to Settings > General > Accessibility. 
2. Select Style. 
3. Select Edit Styles > New Style or Create New Style. You can also select an existing style to edit. 
4. Change the font, size, and color of the text and the color and opacity of the background. A preview of the style appears.
5. Press Menu on your remote to save the style and set it as the default.