I don't have a specific solution for you, except to say that I adjusted my expectations in this regard early in my Therion career. I also like to match plan and elevation colours. I am always conscious when drawing plan and elevation scraps of any slight changes in elevation. When there is a change, I start a new scrap.  I found it quite easy to adjust to this way of working,  although it probably helps to have multiple monitors (as with any drawing package). There is not a precise match between plan and elevation but I have learned to accept it. Short scraps have other advantages if you ever need to rearrange map configurations in the future.Bruce  Sent from my Samsung device -------- Original message -------- From: Marco Menchise <marco.menchise@gmail.com> Date: 28/09/2015 12:54 (GMT+05:45) To: List for Therion users <therion@speleo.sk> Subject: [Therion] Coloring on a altitude basis Hello, I searched in the archives and I didn't find an answer. I like to make plan and extended sections colored by altitude because this is a way to add a "3rd dimension" to a plan drawing. I also like to have the same color in the same cave region either in plan and extended section. This way makes very easy to identify same portions of a cave in both projections. Because Therion colors on scrap basis, I'm forced to draw plan and extended section using the same scrap subdivision. This is a very complex operation and it's not always simple to have the same scrap structure in both projections. Is there a way or a trick to color by altitude, maybe defining an "altitude step" to change colors? Thanks,Marco