I've just bought a new car, color is Silver (metallic paint). I've noticed that there's a lot of light scratches all over the car. I was thinking that it may be because when washing the car and I am using a sponge. It is not so obvious with the silver one, but it may be on Black cars. you can see it when looking very close to it.. Is this normal for the paint they used for the car? Do I have to use pressure washer instead of sponge or brush? Does anyone noticed this light scratches with their cars too?