Sounds like you are looking for aikea_guinea's wall writing mesh and recolors. The second dl link is dead , unfortunately , but I'm guessing that's what you're after
http://club-crimsyn.dreamwidth.org/tag/ts2 . Aikea made three different wall writing meshes for Sims 2 and later , someone ( Gelydh , I think) combined those meshes into one. There are a ton of recolors of those meshes , many on GOS. One of the original meshes and recolors is also at GOS , located here
http://www.digitalperversion.net/gardenofshadows/index.php?topic=9586.0 , There are also a few files at the graveyard located at
http://files.sims2graveyard.com/index.php?path=clubcrimsyn%2Fobjects/ . If you're looking for more options just google Sims 2 aikea guinea wall writing mesh and recolors , you'll get tons of hits. Good luck!
ETA , those meshes are some of my favorite Sims 2 CC ever made , with all the recolors of various things there are so many great options out there.