Change sidebar background color in Twenty eleven theme

Appearance -> Editor select style.css

find

.widget {

inside this CSS style add the background color and some padding. like below

.widget {
    background-color: #ff0;
    clear: both;
    margin: 0 0 2.2em;
    padding: 10px;
}

Thanks a lot WP Bum,

I changed not only7 the color but the padding and margin also.

It worked perfectly!

I found this post as I was trying to do something similar. Two issues, (1) it also changed the footer which I need to have a different color
(2) I would like the sidebar to stretch to the size of the page even if the sidebar has no content.

Any thought?

can I set it up so that I have an image in the background of the sidebar instead of just a color.

@dankejane — posting in an old thread that is marked resolved is very unlikely to get answered. Starting a new thread with your topic works better for you and for the forum.