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Visual Customization: Colors, Shapes, and Specific UI Components

You can customize the React Native Unified Checkout to support visual customization, allowing you to match the design of your app.
You can modify colors, fonts, and more by using the appearance parameter when you call initPaymentSheet().

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Colors

Customize the colors in the mobile Payment Element by modifying the color categories. Each color category determines the color of one or more components in the UI. For example, primary defines the color of the Pay button.
Color CategoryUsage
primaryDefines the color of the Pay button and selected items
backgroundThe color used for the background of your Payment page
componentBackgroundThe color used for the background of inputs, tabs, and other components
componentBorderThe color used for the external border of inputs, tabs, and other components in your PaymentSheet
componentDividerThe color used for the internal border (meaning the border is shared with another component) of inputs, tabs, and other components in your PaymentSheet
primaryTextThe color of the header text in your Payment page
secondaryTextThe color of the label text of input fields
componentTextThe color of the input text in your PaymentSheet components, such as the user’s card number or zip code
placeholderTextThe color of the placeholder text of input fields
iconThe color used for icons in your Payment Sheet, such as the close (x) button
errorThe color used to indicate errors or destructive actions in your Payment Sheet
appearance: {
  colors: {
    primary: '#F8F8F2',
    background: '#ffffff',
    componentBackground: '#E6DB74',
    componentBorder: '#FD971F',
    componentDivider: '#FD971F',
    primaryText: '#F8F8F2',
    secondaryText: '#75715E',
    componentText: '#AE81FF',
    placeholderText: '#E69F66',
    icon: '#F92672',
    error: '#FF0000',
  }
}

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Dark Mode Support

To support dark mode, pass maps for both light and dark colors to colors: 
colors: {
  light: {
    primary: '#F8F8F2',
    background: '#00FF00',
    componentBackground: '#E6DB74',
    componentBorder: '#FD971F',
    componentDivider: '#FD971F',
    primaryText: '#F8F8F2',
    secondaryText: '#75715E',
    componentText: '#AE81FF',
    placeholderText: '#E69F66',
    icon: '#F92672',
    error: '#F92672',
  },
  dark: {
    primary: '#00ff0099',
    background: '#ff0000',
    componentBackground: '#ff0080',
    componentBorder: '#62ff08',
    componentDivider: '#d6de00',
    primaryText: '#5181fc',
    secondaryText: '#ff7b00',
    componentText: '#00ffff',
    placeholderText: '#00ffff',
    icon: '#f0f0f0',
    error: '#0f0f0f',
  },
}

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Shapes

You can customize the border radius, border width, and shadow used throughout the mobile Payment Element.
Shape CategoryUsage
borderRadiusRadius of the border of the input fields, tabs, and other components of the payment page
borderWidthWidth of the border used across input fields, tabs, and other components
shapes: {
  borderRadius: 10,
  borderWidth: 1,
}

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Specific UI Components

The sections above describe customization options that affect the mobile Payment Element broadly, across multiple UI components. We also provide customization options specifically for the primary button (for example, the Pay button). Customization options for specific UI components take precedence over other values. For example, primaryButton.shapes.borderRadius overrides the value of shapes.borderRadius. 
primaryButton: {
  colors: {
    background: '#000000',
    text: '#ffffff',
    border: '#ff00ff',
  },
  shapes: {
    borderRadius: 10,
    borderWidth: 1.5,
  },
}
Now you can test the payments on your app and go live!