app/src/main/webapp/themes/basic/theme.xml

<?xml version="1.0" encoding="UTF-8"?>
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  contributor license agreements.  The ASF licenses this file to You
  under the Apache License, Version 2.0 (the "License"); you may not
  use this file except in compliance with the License.
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  copyright in this work, please see the NOTICE file in the top level
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<weblogtheme>
    
    <id>basic</id>
    <name>Basic</name>
    <description>Super-simple blog theme useful for understanding Roller templates.</description>
    <author>Roller Weblogger</author>

    <!-- theme preview image -->
    <preview-image path="basic-preview.png" />
    
    <!-- stylesheet -->
    <stylesheet>
        <name>basic-custom.css</name>
        <description>Stylesheet for Basic theme</description>
        <link>basic-custom.css</link>
        <contentType>text/html</contentType>
        <rendition>
            <contentsFile>basic-custom.css</contentsFile>
            <templateLanguage>velocity</templateLanguage>
        </rendition>
    </stylesheet>
    
    <!-- templates -->
    <template action="weblog">
        <name>Weblog</name>
        <description>weblog</description>
        <navbar>false</navbar>
        <hidden>true</hidden>
        <contentType>text/html</contentType>
        <rendition>
            <contentsFile>weblog.vm</contentsFile>
            <templateLanguage>velocity</templateLanguage>
        </rendition>
    </template>
    
    <template action="permalink">
        <name>permalink</name>
        <description>permalink</description>
        <navbar>false</navbar>
        <hidden>true</hidden>
        <contentType>text/html</contentType>
        <rendition>
            <contentsFile>permalink.vm</contentsFile>
            <templateLanguage>velocity</templateLanguage>
        </rendition>
    </template>
    
    <template action="search">
        <name>searchresults</name>
        <description>searchresults</description>
        <navbar>false</navbar>
        <hidden>true</hidden>
        <contentType>text/html</contentType>
        <rendition>
            <contentsFile>searchresults.vm</contentsFile>
            <templateLanguage>velocity</templateLanguage>
        </rendition>
    </template>
    
    <template action="custom">
        <name>_day</name>
        <description>_day</description>
        <navbar>false</navbar>
        <hidden>true</hidden>
        <contentType>text/html</contentType>
        <rendition>
            <contentsFile>_day.vm</contentsFile>
            <templateLanguage>velocity</templateLanguage>
        </rendition>
    </template>
    
    <template action="custom">
        <name>sidebar</name>
        <description>sidebar</description>
        <navbar>false</navbar>
        <hidden>true</hidden>
        <contentType>text/html</contentType>
        <rendition>
            <contentsFile>sidebar.vm</contentsFile>
            <templateLanguage>velocity</templateLanguage>
        </rendition>
    </template>
</weblogtheme>