Best way to fix scratch on gray rear panel

[summitbounddriver484]

I just noticed this annoying scratch on the gray rear panel of my car after a little bump in a parking lot. Thankfully, it's the only damage, but I'm itching to fix it myself. Has anyone here ever used pen or brush touch-up paint? I'd love to hear your thoughts on what products work best or any tips you might have. Any help would be super appreciated

 

[pepper.mint]

Dr. ColorChip and OEM kits are popular for a reason...they blend decently if you're patient

 

[Meeny]

Are you aiming for a quick cover-up so it's less noticeable, or do you want the repair to blend in almost perfectly with the factory finish?