This setting is specific to the iOS SDK only and controls the color of the loading indicator that appears during a purchase (activated after the user presses 'Buy').
Example of use:
Access the Edit screen mode:
Add a Paywall screen from templates on the flow by drag and drop
Click on the screen you've added to the onboarding flow.
Press the Pencil button to enter the "Edit Screen" mode.
Also, you can confugure the screen for the whole theme. The options for cuatomizing will be the same.
Access Loader on the Edit screen
On the Edit screen, locate the Loader section.
Click on Arrow to expand Loader setting Customization
Customize Loader Color
Set a Loader color by selecting the needed color from the palette or inserting certain HEX
Saving Your Changes
After customizing the Loader, click "Save and Close" to apply your changes. If you press the "Close" button without saving, all modifications will be lost.