With your character in the third person view (where you can see your character), open the console window and select your character. Type kill at the console window and you should hear the death music. After that, type resurrect on your character and exit the console screen. Enter the first person view and you should have the 100% Chameleon effect on your character. To return to normal, go back to your body and type resurrect on him. Note: Your body may disappear after awhile, so you may need to take trips back to your body.