Back in 2017, I have scratched my 2017 prime Blizzard Pearl front bumper after a few days driving. Prime bumper is just way so low and hit the tire stopper at Walgreens parking lot. I wanted to patch the scratch and repaint myself so I have tried my skill on my 2014 before repairing my prime.... Overall, I spent 1x primer can, 3x blizzard pearl can from buplicolor and 1x 2K clear coat. I’m not professional but I think result is acceptable. Below is the scratch I’m repairing and the end result is in YouTube. Faster forward to the end to see final result if u are interested in DIY. iPhone ?
That seems a lot of work to touch up a scratch low on the body on a piece of plastic. I think I would brush on some touch-up paint on that scratch and call it good. It won't rust, and it's not obvious to the eye if it's the same color as the rest of the panel.
I did tried the duplicolor pen but the result was poor because the damaged was too deep. Actually, the most time consuming part was the waiting time between spray. iPhone ?