You can use your colors to brand your app in several different places.

First, via your home screen. This will allow you to change the color of the 'tap here to check in' display, or even switch the whole appearance of the app to light or dark mode:

Next, via 'Buttons' on the left, you can select the color of each button you create. Start by clicking 'Existing Buttons' and click 'edit' next to the button you want to change:

Now you can select a variety of customizations for each button, including color!

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