Create scene card
Click Add scene and select Color.
Add solid color backgrounds
Go to the Editing section.
Click on the scene card on the left side of the interface and then the color picker to select a background color.
An interface will open, offering several options to choose the color of the background:
Use either the primary and secondary color of your project,
the color picker or
enter directly your desired hex code.
Now set the seconds to determine how long the Color Card should appear in the final video.