<MyColourRendererPlugin Project>/src/org/myorg/mycolourrendererplugin/layer.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE filesystem PUBLIC "-//NetBeans//DTD Filesystem 1.2//EN" "http://www.netbeans.org/dtds/filesystem-1_2.dtd">
<filesystem>
    <folder name="IJC">
        <folder name="RendererFactories">
            <file name="ColouringRendererFactory.instance">
                <attr name="instanceClass" stringvalue="org.myorg.mycolourrendererplugin.ColouringRendererFactory"/>
                <attr name="position" intvalue="100"/>
            </file>
        </folder>
    </folder>
</filesystem>