Oh ~ I see
If you want to keep the patina light, keep it out of the sun (that includes when it's in your car) and store it in the dust bag when not in use. This will help to keep it light, but I have heard the patina will develop ever so slowly even if you keep it stored in the dust bag away from light. As far as how long, I'm really not sure. I never really paid attention to that aspect of it.
