I'm looking for a good/standard way of labeling the _rear_ of a 110 patch panel. In this case several Hubbell P6E48U. They come preprinted 1-48. On my second panel I used a labeler to renumber the front 49-96 and so on. I'm going to punch down jacks at the user side first, and start the numbering there. When it comes to punching down cables in the patch panel, I want to make things as easy as possible, by renumbering the rear to match the front. I suppose I could add 48 in my head, but that's prone to error. A labeler seems bad because it will cover the color codes. I didn't see a 49-96 prenumbered cardstock I could slip in. Ideas? Sharpie?