Given an image, returns dominant colors
npm install react-native-color-grabber --save- Add 
node_modules/color-grabber/color-grabberto your project - Run and build
 
var colorGrabber = require('react-native').NativeModules.colorGrabber
colorGrabber.getColors(image, (err, res) => {
    console.log(res);
    // Returns:
    // {
    //  'UIDeviceRGBColorSpace 0.0784314 0.0941176 0.0823529 1': '0.1666667',
    //  'UIDeviceRGBColorSpace 0.215686 0.203922 0.262745 1': '0.1666667',
    //  'UIDeviceRGBColorSpace 0.517647 0.45098 0.380392 1': '0.6666667'
    // }
});Creating a map style from the dominant colors in an image
- Only tested with images from 
assets-library:// - Code from
 
