This script visualizes the relative movement of a single OHLC candle compared to an index (or another symbol). The vertical location of the candle indicates the general positive/negative comparison of the bar vs the index. The color of the candle indicates how the candle moved relative to the index. The wick indicates the closing range compared to the index (did the symbol close at lows of the bar while the index closed at highs).
The area graph in the background shows the average relative close over a 10-day simple moving average.
I use this to pop any behavior that is out of line with the market, whether positive or negative. For example, is a red bar day due to the market pullback or something specific to the stock. Or did the market pull back and the stock did the opposite, strong day!