Conditional Formatting for Filed parameters

[Srikanth_reddy]

Hi Everyone, 

Below is the Line and clustered cloumn chart,  In x-axis i am using "days remaing in a month"  
In cloumn y- axis i am using order/sales filed parameter and in Line Y-axis i am using the vs prev year , vs forecast , vs AOP field parameter. 
So my requriment is to do conditonal formatting the bars should show in orange color when bars are below the trend line and above trend line it should as blue color. 
it should be dyanmic changed. 

pls let me know how to achieve the conditinoal formatting for the bars shown in the pic 

thanks in advance