Ah... sad to say, you can't. Not exactly anyway. Color bars are for calibrating signal. This means when you have a signal that's calibrated, it can look a thousand different ways on different monitors but still be almost exactly the same. But really all you can do to calibrate your monitors is to do it by eye.(posted 7747 days ago)I work for a television station. All of the monitors look different. Our production manager told me this: When a client would come in and look at his footage, he would ask, "Which monitor is correct?" and he would say, "Which do you like best?"
To sum up, color bars are for getting the correct and brightest color while still being legal.