Log file output with ^[32m characters

[ttback]

I did a normal config with stream as the example code

function saveLogFile(data) {
    console.log(data.output);
    var stream = fs.createWriteStream(config.OUTPUT_ROOT_DIR + '/' + config.LOG_FILE_NAME, {
                flags: "a",
                encoding: "utf8",
                mode: 0666
            }).write(data.output+"\n");
}

var logger = require('tracer').colorConsole({
        level: 'info',
        transport: saveLogFile
    });

But the results have some
^�[32m chars all over the place...any idea on what those are?

[baryon]

Please use console replace colorConsole

var logger = require('tracer').console({
        level: 'info',
        transport: saveLogFile
    });