Create Your Own Theme
People remember you when they see the same branding across your account. Using consistent colors, fonts, and layouts builds brand recall, which helps your account grow faster.
A custom theme saves your brand choices so you do not have to set them up every time you create a carousel.
Create your theme
Switch over to the "Customize" tab, change the colors, fonts, and layouts to your liking, and click "Save as new theme".

Preview your theme
Scroll to the Layouts section at the bottom and click "See preview" for each layout option.