Add and edit backgrounds in iMovie on iPad
You can add a colour background to your movie project. iMovie includes a number of solid, gradient and pattern backgrounds that you can customise.
Add a background
Change the colour of a solid background
Change the colours of a gradient or pattern background
In the iMovie app on your iPad, open a movie project.
In the timeline, tap the background clip you want to customise.
In the top-right corner of the viewer, tap the Colour button .
Two Colour buttons appear in the viewer, showing the primary and secondary colours used to generate the gradient or pattern.
Do any of the following:
Set the primary background colour: Tap the first Colour button (on the left), then choose a colour from the available options.
Set the secondary background colour: Tap the second Colour button (on the right), then choose a colour from the available options.