Create Parse HTML CSS Colors.js

/*
Description:
In this kata you parse RGB colors represented by strings. The formats are primarily used in HTML and CSS. Your task is to implement a function which takes a color as a string and returns the parsed color as a map (see Examples).
Input:
The input string represents one of the following:
6-digit hexadecimal - "#RRGGBB"
e.g. "#012345", "#789abc", "#FFA077"
Each pair of digits represents a value of the channel in hexadecimal: 00 to FF
3-digit hexadecimal - "#RGB"
e.g. "#012", "#aaa", "#F5A"
Each digit represents a value 0 to F which translates to 2-digit hexadecimal: 0->00, 1->11, 2->22, and so on.
Preset color name
e.g. "red", "BLUE", "LimeGreen"
You have to use the predefined map PRESET_COLORS (JavaScript, Python, Ruby), presetColors (Java, C#, Haskell), or preset-colors (Clojure). The keys are the names of preset colors in lower-case and the values are the corresponding colors in 6-digit hexadecimal (same as 1. "#RRGGBB").
Examples:
parseHTMLColor('#80FFA0');    // => { r: 128, g: 255, b: 160 }
parseHTMLColor('#3B7');       // => { r: 51,  g: 187, b: 119 }
parseHTMLColor('LimeGreen');  // => { r: 50,  g: 205, b: 50  }
*/
function parseHTMLColor(c) {
  if (!c.match("#")) c = PRESET_COLORS[c.toLowerCase()];

  c = c.replace('#', '');

  if (c.length < 6) c = c.replace(/(.)/g, "$1$1");

  return {
    r: parseInt(c.substring(0, 2), 16),
    g: parseInt(c.substring(2, 4), 16),
    b: parseInt(c.substring(4, 6), 16)
  };
}