The Donchian values are basically from Ed Sekoytas original statistical run, that gave the values 30 & 120 (aren't as relevant today, but still packs a punch).
The idea of this code is just to take that 30, add a very simple inset of it, with ATR, and color code the bar Green or Red to indicate the direction of the trend. When a new break of the 120 line, (thick line) higher or lower, it typically indicates a bigger bias towards the trend.
It's my first publish, and so a very simple easy to understand system.
Use at your own risk. I cannot be held liable for any damages financial or otherwise, directly or indirectly related to using this script.