Downloading and unzipping the files into your game
Extract the file inside the zip file into: My Documents\EA Games\The Sims 2\Downloads Recolored objects which do not have a color option in the original game will only appear in your game if you have the Color Options Enabler installed
Make sure you have the latest update of CEP!
Open the zip file and double click on the file.
It will automatically be extracted to the right place in your game.
Walls / Floors:
Extract the file inside the zip file into: My Documents\EA Games\The Sims 2\Downloads