Multiple Background Shades in Graph
 

Hi,

I'm trying to create graph with multiple background shades. i.e if i were
trying to create a graph of the price of a stock, when the stock has had an
upward trend the background would be a different color than that of when the
stock has had a downward trend. Also if the colors of the background would
only be on top of the stock plot. Any help would be greatly appreciated.

Thanks,

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