External css can be enabled by link tag as normal HTML. But for custom
components, their default css resources are packed in jar file and they
can be accessed in component renderer. So even there is no link tag in
faces page to define external css, the renderers have problem to render
component in runtime. But for Web Page Designer, they cannot be resolved
unless you have link tag and have those css resources copied in web
root. If I create a plugin bundled with those css resources, how can I
manipulate design time dom via an (?) extension point. Or if there is
better solution?