Sidebar Background Color

I was successful at changing the background color of the side bar by using the following css:

#core_right_column {
background-image: url(“image”);
background-repeat: repeat;
}

But this changes the background color on all page sidebars. I would like to change the background color of the side bar on only 1 page.

What adjustments must be made with the above code for a single page?

I appreciate the help.

Thank you.