a colorful termial output for phantomjs porting from casperjs

var fs = require('fs');

    var options    = { bold: 1, underscore: 4, blink: 5, reverse: 7, conceal: 8 };
    var foreground = { black: 30, red: 31, green: 32, yellow: 33, blue: 34, magenta: 35, cyan: 36, white: 37 };
    var background = { black: 40, red: 41, green: 42, yellow: 43, blue: 44, magenta: 45, cyan: 46, white: 47 };
    var styles     = {
        'ERROR':     { bg: 'red', fg: 'white', bold: true },
        'INFO':      { fg: 'green', bold: true },
        'TRACE':     { fg: 'green', bold: true },
        'PARAMETER': { fg: 'cyan' },
        'COMMENT':   { fg: 'yellow' },
        'WARN':   { fg: 'red', bold: true },
        'GREEN_BAR': { fg: 'white', bg: 'green', bold: true },
        'RED_BAR':   { fg: 'white', bg: 'red', bold: true },
        'INFO_BAR':  { bg: 'cyan', fg: 'white', bold: true }
    };

    /**
     * Adds a style to provided text.
     *
     * @param   String  text
     * @param   String  styleName
     * @return  String
     */
    function colorize(text, styleName, pad) {

        return format(text, styles[styleName], pad);
    };

    /**
     * Formats a text using a style declaration object.
     *
     * @param  String  text
     * @param  Object  style
     * @return String
     */
    function format(text, style, pad) {
        //if (fs.isWindows() || !isObject(style)) {
        //    return text;
        //}
        var codes = [];
        if (style.fg && foreground[style.fg]) {
            codes.push(foreground[style.fg]);
        }
        if (style.bg && background[style.bg]) {
            codes.push(background[style.bg]);
        }
        for (var option in options) {
            if (style[option] === true) {
                codes.push(options[option]);
            }
        }
        // pad
        if (typeof pad === "number" && text.length < pad) {
            text += new Array(pad - text.length + 1).join(' ');
        }
        return "\033[" + codes.join(';') + 'm' + text + "\033[0m";
    };






var pad=0;
console.log(colorize("aaa", "ERROR"));
console.log("zzz");
phantom.exit(0);