We recently discovered Coredinations paper while designing our latest kit. The paper has a "core color" with another color on top. You can do all sorts of things to the paper to bring out the core color... tear it, sand it, etc. We gave it a try by placing chipboard letters under the paper and sanding over the top.
You can try it out for yourself by purchasing our newest kit, which has just been released!
Crystal & Kelli