Steps to Reproduce

1. run the zul in iceblue theme
2. select the 1st and 2nd item
3. deselect the 1st item

Current Result

the 1st and 2nd both have the same background color which confuses end-users that the 1st one looks still selected

Expected Result

the 1st one is the focused item should have a different background color from the selected item

Workaround

        .z-listitem-focus>.z-listcell {
            background: #e0f2ff;
        }