You might just get a warning if your driver's license is from Oregon and the car really is registered there, but with California in a budget crisis, you know cops are looking to make some money for the state and their local municipalities. I mean, I'm going illegal on my front windows, but only about a 50 percent at most, maybe the same all the way around. The darker it is, the cooler it looks and the more likely you are to pull a big ticket. I don't know the law for Oregon in regards to that front plate, but, at least in theory, when you operate a vehicle in a different state, the vehicle has to operate up to their minimum standards, not your home state's rules. Again, I'll bet you probably won't get a ticket if you drive safely, but if you have a heavy foot, don't be mad when you get a ticket for that and then a fix-it ticket that requires you to remove your beautiful tint job. Now, if you really want to get away with it, just get a doctor to say you have light sensitivity. If you have a certified note that says that the tint is necessary for your health, you're golden. Me, I'm going to try for that the moment my health insurance through work kicks in. mmm, breaking the law and looking good doing it.