I tried to add instagram filters from this code

Hi I tried these instagram filter from this source code

https://github.com/girliemac/filterous-2/blob/master/lib/instaFilters.js#L135

I think you need to add these two function

	rgbAdjust: function rgbAdjust(rgbAdj,cb) {
		this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
			var red = this.bitmap.data[idx];
			var green = this.bitmap.data[idx + 1];
			var blue = this.bitmap.data[idx + 2];
			red *= rgbAdj[0]
			green *= rgbAdj[1]
			blue *= rgbAdj[2]
			this.bitmap.data[idx] = red < 255 ? red : 255;
			this.bitmap.data[idx + 1] = green < 255 ? green : 255;
			this.bitmap.data[idx + 2] = blue < 255 ? blue : 255;
		});

		if ((0, _utils.isNodePattern)(cb)) {
			cb.call(this, null, this);
		}

		return this;
	},

and

colorFilter: function colorFilter(rgbColor,cb) {
  this.scanQuiet(0, 0, this.bitmap.width, this.bitmap.height, function (x, y, idx) {
    var adj = rgbColor[3];
    var red = this.bitmap.data[idx];
    var green = this.bitmap.data[idx + 1];
    var blue = this.bitmap.data[idx + 2];
    red -= (red - rgbColor[0]) * adj;
    green  -= (green - rgbColor[1]) * adj;
    blue -= (blue - rgbColor[2]) * adj;
    this.bitmap.data[idx] = red < 255 ? red : 255;
    this.bitmap.data[idx + 1] = green < 255 ? green : 255;
    this.bitmap.data[idx + 2] = blue < 255 ? blue : 255;
  });

  if ((0, _utils.isNodePattern)(cb)) {
    cb.call(this, null, this);
  }

  return this;
},

in plugin color, it's help shorten image manipulation. and in sepia color filterous-2 has value to change sepia intensity