Shader applies a neon filter in JanusWeb. This does not work in JanusVR native, and will just show the geometry as if there was no shader applied. You'll need a glsl shader compatible with that (TODO: add a native app shader.)
To try it on your own stuff, click Clone and make sure you're using janusweb_neon_shader.js from the source. Objects to apply the shader to should have "neon_shader" in the js_id (this is a workaround until JanusWeb supports the shader_id attribute). May not work for non-objects (text, etc.) as I haven't tested that.
This *may* have issues with textures on gltf assets until the next release of JanusWeb (currently on 1.3.2 as I write this)
Hue cycling effect is done with another script in the source. It's not part of the shader.
#threejs #janusweb #shader #neon