1. Perhaps someone from CA would best answer this.
2. Obviously not a color code.
3. Yes, these look inappropriate. However, the front forward mount, side view mirrors may have been a requirement on Japanese cars of the era since they all seemed to have it. If you look at any OEM literature from Datsun or Toyota of the time, they all had it. Maybe the customizer Mr. Watson though they were interesting.
More revolting than the mirrors are the wire wheels. Remember back then this was just a used car. The status it has today did not exist then.