What to do about deep scratches?
 

Well I came out to my car one day and found several deep scratches on the trunk. Not sure how well you can see it in the picture, but it's deep enough that it's white and I can actually feel the scratch.

What do you guys think I should do about them? Touch up paint seems obvious but I'm not sure how well it will turn out since the scratches are so long.

Higher resolution: imgur: the simple image sharer