How can I color the background for the column headers in my report? I need 5 subtle colors across by 10 column headers.

So I managed to get everything to work in the "console" while manually executing, but it disappears when I click off.  I assume that is because the script is not loaded where it should be to keep it every time the page reloads.  I am not sure how to use the IOL technique and where to put the script.  I have tried numerous things but nothing works and I really need some specifics.  Do you have screen shots of where to go within the table example you showed?