Only 2000 miles on my new 2016 WRX and someone ran into it scrapping the back bumper. It not that bad but it's still irritating the car is brand new and of course they didnt leave their insurance info. They just hit and run. This is my first ever new car and the first anyone has ever hit one of my cars. So I'm pretty bummed about it. Anyway, Im afraid that a touch up paint pen won't do it for me and am afraid to spray paint in fear you can tell it's been done by a noob. It's all on the plastic and was told a shop would charge around $300 to fix such little damage. I'm just looking for suggestions on how I should fix it. I'm a DIY kind of guy but never tackled painting a car. How should I go about fixing these scrapes on my brand new baby?

2016 WRX: http://i.imgur.com/s17S3RT.jpg The scratches :( http://i.imgur.com/wbqybxe.jpg

Any suggestions are greatly appreciated! Thanks fellow Subaru owners!