1. Open the relevant video.
2. Click on the 3 dots and select Open in Video Maker.
3. Click on the Style button on the left sidebar.
4. Choose the captions theme from the video theme selection.
* Note: Customized captions font and create new colors in Branding is available only on Plus💎, Workgroups & Teams plans (Related FAQ: How to customize my captions theme?)
5. Click on Create to apply all the changes in Video Maker.
To highlight, right-click on the selected word you want to highlight and choose: "Highlight" (word surrounded by stars: *word*) or "Extra Highlight" (word surrounded by slashs: /word/) and it will display the 2 highlighted colors of your Video Theme.