It's worth trying a high-quality paste wax before going too crazy with more involved fixes. Applied correctly you shouldn't even notice the wax. If you mess up or dislike it, wax is soluble in acetone so it's easily removed. You can't really make anything worse, in other words.
Try rubbing a little oil into a scratch and see if it helps. this would not be a permanent fix and would have to be done frequently. A more permanent fix would be to get a set of colored magic markers and dot in the appropriate color into the scratch. This takes a while but lasts a long time.