SVG Sprite Color

Gruntfile.js

var svgColor = function(color) {
  return function(shape, sprite, callback) {
    var paths = shape.dom.getElementsByTagName('path');
    for (var i = 0; i < paths.length; i++) {
      paths[i].setAttribute('fill', color);
    }
    callback(null);
  };
};

module.exports = function(grunt) {
  grunt.initConfig({
    svg_sprite: {
      // ...
      options: {
        // svgo must appear in transform list
        transform: ['svgo', {
          // 'dark' can be changed for any value
          dark: svgColor('#FFF')
        }],
      }
    }
  }
};