> For the complete documentation index, see [llms.txt](https://docs.caf.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.caf.io/caf-sdk/react-native/standalone-modules/document-detector/customizing-style.md).

# Customizing Style

### Android

On Android, to be able to customize the style, you need to have access to the react native android folder

#### Primary Color

Inside the android folder in `android/app/src/main/res/values/styles.xml`, add the following code:

```xml
...
<style name="cafDefaultStyle" parent="cafWindowProperties">
  <item name="colorPrimary">#f43d2f</item>
</style>

<style name="cafDefaultButtonStyle" parent="Widget.AppCompat.Button">
  <item name="android:layout_width">0dp</item>
  <item name="android:layout_height">60dp</item>
  <item name="android:gravity">center</item>
  <item name="android:textColor">#ffffff</item>
  <item name="android:textSize">18sp</item>
  <item name="android:fontFamily">sans-serif</item>
  <item name="android:textAllCaps">false</item>
  <item name="backgroundTint">?attr/colorPrimary</item>
</style>

<style name="cafDefaultUploadStyle" parent="cafWindowProperties">
  <item name="android:background">#000000</item>
</style>

<style name="cafDefaultPreviewStyle" parent="cafWindowProperties">
  <item name="android:background">#000000</item>
</style>
```

#### Feedback Colors

Inside the android folder in `android/app/src/main/res/values/colors.xml`, add the following code:

```xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
  ...
  <color name="mask_color_red_background">#667818</color> // Error color
  <color name="mask_color_green_background">#B0F1FF</color> // Success color
  <color name="mask_color_black_background">#80FF6E</color> // Default color
</resources>
```

#### How to use

```tsx
import React from 'react';
import {
  useDocumentDetector,
} from '@caf.io/react-native-document-detector';

export default function App() {
  const { 
    result, 
    error, 
    cancelled, 
  } = useDocumentDetector({
    style: {
      primaryColor: '#f43d2f',
      feedbackColors: {
        errorColor: '#667818',
        successColor: '#B0F1FF',
        defaultColor: '#80FF6E'
      },
      uploadBackgroundColor: '#000000',
      previewBackgroundColor: '#000000',
    },
  });

  return (
    ...
  );
} 
```


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