создать файл theme.xml в папке шаблона, в repo_themes с кодом:

<?xml version="1.0" encoding="ISO-8859-1"?>
<theme id="THEMENAME" last_modified="2008-12-23 15:17:13">
    <title><![CDATA[THEMENAME]]></title>
    <components_settings>
        <component id="htmlcode">
            <setting name="caption" value="HEllo text - 125"></setting>
            <setting name="manage_htmlcode" value=""></setting>
        </component>
    </components_settings>
</theme>