InvertColor

function InvertColor(color,short) {
    if(typeof color === 'undefined') return false;
    if(typeof short === 'undefined') var short = false;
    color = color.substr(1);
    if (color.length === 3) {
        var color = color[0]+color[0]+color[1]+color[1]+color[2]+color[2];
    }
    var colornum = {1:255-parseInt(color[0]+color[1], 16), 2:255-parseInt(color[2]+color[3], 16), 3:255-parseInt(color[4]+color[5], 16)};
    var hex = (String("00" + colornum[1].toString(16)).slice(-2)+String("00" + colornum[2].toString(16)).slice(-2)+String("00" + colornum[3].toString(16)).slice(-2)).toUpperCase();
    if(short === true && hex[0] === hex[1] && hex[2] === hex[3] && hex[4] === hex[5]){
        return '#'+hex[0]+hex[2]+hex[4];
    } else {
        return '#'+hex;
    }
}