You can edit colors of your app by logging into your Control Panel, selecting your app, then click the “Colors” tab.
You should note the settings before you make a change because you can’t reset to the previous settings.
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Simply Click the box of the color section you want to change. The changes you make will be reflected in the app simulator on the right-hand-side of the screen.
IMPORTANT NOTE: When you make a change to your app’s Home Page in the Control Panel, your live app will be updated.