adding chart objects behind price, volume, and all other objects

 

I would like to create an indicator that is placed behind everything else in the chart.  The reason why is that it will basically take up the whole chart, so if it was in front, nothing else would be visable!  It is a type of support and resistance indicator.  It is a gradiant, meaning it changes from the chart background color for horizontal ranges of no resistance, to another color, say blue, for horzontal ranges with resistance.  If there is a little bit of resistance the blue is barely visable, if there is a lot of resistance the blue is very visible.  Something like this, of course with everything else on the chart on top of it:

       

Is this possible?

Reason: