This mod adds two new tiles to the game: a yellow-striped caution tile and a plain yellow tile that goes with it. But as Max demonstrates in the screenshots above: safety not guaranteed! Since my goal was to stay true to the original game, these new tiles cost the same as metal tiles, and have the same properties.
This mod is compatible with all your current gamesaves. If you add caution tiles and then remove the mod, the game will simply tell you that it couldn't find the requested TerrainDef for those cells, and will remove the floors from those cells. All you'll then have to do, is refloor those spots.
I hope you like it, and if you do, consider leaving a rating or a like. And of course, any remarks and suggestions welcome. Enjoy!
PS: If you have my "Floored" mod, you already have these tiles and there is no need to install this mod.