Custom colors

You can set background color for active and other tabs using setSkinColors method ( works not for all skins )
Source
<link rel="STYLESHEET" type="text/css" href="../../codebase/dhtmlxtabbar.css">
<script  src="../../codebase/dhtmlxcommon.js"></script>
<script  src="../../codebase/dhtmlxtabbar.js"></script>
 
 
<table width="500px">
    <tr>
        <td>
            <div id="a_tabbar" style="width:100%; height:50px;"/>
        </td> </tr>
        <td>
            <div id="b_tabbar" style="width:100%; height:50px;"/>
        </td> </tr>
        <td>
            <div id="c_tabbar" style="width:100%; height:50px;"/>
        </td> </tr>
        <td>
            <div id="d_tabbar" style="width:100%; height:50px;"/>
        </td> </tr>
</table>
<br>
<script>tabbar = new dhtmlXTabBar("a_tabbar", "top");
tabbar.setImagePath("../../codebase/imgs/");
tabbar.loadXML("../common/config.xml");
tabbar2 = new dhtmlXTabBar("b_tabbar", "top");
tabbar2.setImagePath("../../codebase/imgs/");
tabbar2.loadXML("../common/config.xml");
tabbar2.setSkinColors("#FFFF00", "#FFFACD");
tabbar3 = new dhtmlXTabBar("c_tabbar", "top");
tabbar3.setImagePath("../../codebase/imgs/");
tabbar3.loadXML("../common/config.xml");
tabbar3.setSkinColors("#7FFF00", "#9ACD32");
tabbar4 = new dhtmlXTabBar("d_tabbar", "top");
tabbar4.setImagePath("../../codebase/imgs/");
tabbar4.loadXML("../common/config.xml");
tabbar4.setSkinColors("#FF69B4", "#FFC0CB");</script>