ef="http://www.w3.org/TR/CSS21/colors.html#background-properties" />
        <meta name="flags" content="image invalid" />
        <meta name="assert" content="Background-color set to rgb(-1%, -1%, -1%) truncates to a valid value." />
        <style type="text/css">* { margin: 0; padding: 0 }
            img, #test
            {
                height: 1in;
                width: 1in;
            }
            #test
            {
                background-color: rgb(-1%, -1%, -1%);
            