Thanks for all your kind words guys, but the one person I'd like to hear from hasn't responded yet and that's Doug. I really hope he likes what I did with his structure. Rayraz, believe it or not the color hologram bit is using the alien disco ball texture from the complex textures in Bryce. I have never used it before apart from putting it on a sphere and it just didn't look like much, but putting it on a structure with a bit of complexity itself seems to be what it was made for. After this I'll be trying it out on all sorts of lattice shapes. 8) Catlin