How to use the color-string.getRgb function in color-string

// use a particular form to set the color either
    // color = hex value or named colors
    // or set color null and set opt which is an object as {r:x, g:x, b:x}
    // values where x is an 8-bit value (0-255);
    // opts can contain _sendmsg_ as bool. If set to false message won't be
    // sent to firmata - useful for strip level updates to keep message choke down

    var pixel = pixels.get(this);

    var options = opts || {};
    var sendmsg = options.sendmsg || true;

    var pixelcolor = null;
    if (color) {
        // get the color based on a string
        pixelcolor = ColorString.getRgb(color) || null;
    } else if (opts) {
        // set using rgb value
        pixelcolor = options.rgb || null;
    } else {
        return pixel.color;
    }

    if (pixelcolor != null) {
        // fill out the values for the pixel and then send the message to update
        // it on the strip

        with (pixel.color) {
            r = pixelcolor[0];
            g = pixelcolor[1];
            b = pixelcolor[2];
            hexcode = ColorString.hexString(pixelcolor);

Strip.prototype.color = function(color, opts) {
    // sets the color of the entire strip
    // use a particular form to set the color either
    // color = hex value or named colors
    // or set color null and set opt which is an object as {rgb: [rx, gx, bx]}
    // values where x is an 8-bit value (0-255);
    var strip = strips.get(this);

    var stripcolor = null;

    if (color) { 
        // use text to determine the color
        stripcolor = ColorString.getRgb(color) || null;

    } else if (opts) {
        // use rgb array to determine color
        stripcolor = opts.rgb || null;
    }

    if (stripcolor != null) {
        // fill out the values for the pixels and then update the strip

        // TODO get this to update all of the pixels
/**        for (pixel in strip.pixels) {
            pixel.
        }**/

        color = ColorString.colorValue(stripcolor);
        var msg = "{a:" + color + "}";

['color', 'background'].forEach((prop) => {
      let
      value = style[prop],
      num = 30 + (prop === 'background' ? 10 : 0),
      index, c;

      if (index = BASIC_COLOR.indexOf(value), index !== -1) {
        props.push(num + index);
      } else if (c = color.getRgb(value)) {
        // if `rule.consoleRgb` is true, it uses RGB color.
        props.push((num + 8) + ';' + (this.rule.consoleRgb ? '2;' + c.join(';') : '5;' + color256(c)));
      } else if (typeof value !== 'undefined') {
        props.push(value);
      }
    });

i += 1;
    case 'magenta':
      i += 1;
    case 'blue':
      i += 1;
    case 'yellow':
      i += 1;
    case 'green':
      i += 1;
    case 'red':
      i += 1;
    case 'black':
      return ''+i;
    }

    if (c = color.getRgb(value)) {
      return config.consoleRgb ? (i+8) + ';2;' + c.join(';') :  (i+8) + ';5;' + color256(c);
    }

    return value;

  default:
    return '';
  }
};

function rgb(str) {
    return colorString.getRgb(str).map(function(c) {
        return c/255
    })
}