In the example CMG hasn't been overbought for 183 days, so the is mostly green:
Before that it hadn't been oversold for 199 days, so is mostly red:
And before that it was ranging like a maf*ckin' , so the shows green, red, green, red, etc.:
Finally, normal for comparison. Same data, but now with pretty colours:
I've also added overbought/oversold highlights cause that just makes the whole charting thing a lot easier. Enjoy!