RadioButtonList 怎么实现选中的项背景颜色变深

RadioButtonList 如何实现选中的项背景颜色变深
                <asp:RadioButtonList ID="RadioButtonList3" runat="server" AutoPostBack="True" OnSelectedIndexChanged="RadioButtonList3_SelectedIndexChanged"
                    RepeatDirection="Horizontal">
                    <asp:ListItem Text="原材料/委外" Value="原材料/委外"></asp:ListItem>
                    <asp:ListItem Text="外购成品" Value="外购成品" Selected="True"></asp:ListItem>
                </asp:RadioButtonList>
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like it?
http://www.cnblogs.com/insus/archive/2012/03/27/2419528.html
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see also:
http://www.cnblogs.com/insus/archive/2012/09/13/2683216.html


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$('#<%=RadioButtonList3.ClientID%> option').click(function(){
    $('#<%=RadioButtonList3.ClientID%> option').css('color','');
    $(this).css('color','red');
});
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用Js（jquery）给选中的那个object改下css，点另一个的时候记得再改回去