gistfile1.txt

  /**
   * This function estimates the average of two six-digit hexadecimal colors.
   * The function assumes that the inputs are valid.
   * @param {*} color1 // first hexadecimal color
   * @param {*} color2 // second hexadecimal color
   * @author Vivek Narang
   */

  function avgColor(color1, color2) {

    // Parse the red part of the inputs and convert them in the integer format.
    var r1 = parseInt(color1.substring(0, 2), 16);
    var r2 = parseInt(color2.substring(0, 2), 16);
    
    // Parse the green part of the inputs and convert them in the integer format.
    var g1 = parseInt(color1.substring(2, 4), 16);
    var g2 = parseInt(color2.substring(2, 4), 16);

    // Parse the blue part of the inputs and convert them in the integer format.
    var b1 = parseInt(color1.substring(4, 6), 16);
    var b2 = parseInt(color2.substring(4, 6), 16);

    // Sum up the squares of the red part of the input.
    var rsq = Math.pow(r1, 2) + Math.pow(r2, 2);
    // Sum up the squares of the green part of the input.
    var gsq = Math.pow(g1, 2) + Math.pow(g2, 2);
    // Sum up the squares of the blue part of the input.
    var bsq = Math.pow(b1, 2) + Math.pow(b2, 2);

    // Return the Hex representation of the int casted square roots of half of the rsq, gsq & bsq variables computed above ...
    return (parseInt(Math.sqrt(rsq/2))).toString(16) + (parseInt(Math.sqrt(gsq/2))).toString(16) + (parseInt(Math.sqrt(bsq/2))).toString(16);


  }