Change Indicator BACKGROUND ONLY

 
Hello there.
I have 3 indicators on my chart window - stoch, williams and macd.
I have changed my background chart color to white
but i would like to know how to keep the background for my indicators another color (say black for example).

If anybody could help me - i would really appreciate it very much.
Thank you.
 
You could fake it with a background rectangle.
Reason: