Invert RGB color js

invertRGB.js

function componentToHex(c) {
    var hex = c.toString(16);
    return hex.length == 1 ? "0" + hex : hex;
}

function rgbToHex(r, g, b) {
    return "#" + componentToHex(r) + componentToHex(g) + componentToHex(b);
}

function invert(rgb) {
    rgb = [].slice.call(arguments).join(",").replace(/rgb\(|\)|rgba\(|\)|\s/gi, '').split(',');
    for (var i = 0; i < rgb.length; i++) rgb[i] = (i === 3 ? 1 : 255) - rgb[i];
    return rgbToHex(rgb[0], rgb[1], rgb[2]);
}

// invert elem background
var color = elem.css("background-color");
elem.css('border-color', invert(color));

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