@TwinTurbo , thanks for additional tips. I am trying to absorb your suggestion and here is what I understood, step by step. Please correct me, if I am missing something and options I could find →
1- 91% isopropyl alcohol to remove wax, oils, and residue from both affected area (on metal as well on plastic part)
2- Apply thick wax around damaged area (Options - Meguiar’s M26 Hi-Tech Yellow Wax Paste or Collinite No. 476s Super DoubleCoat Auto Wax ???)
3- Get Spray paint. Option →
Alabaster Silver Metallic, NH-700M from TouchUpDirect. If I choose that, it has below options -
Aaerosol essential Kit - Includes Aerosol Colorcoat and Aerosol Clearcoat
Aerosol preferred Kit - Includes Aerosol Colorcoat, Aerosol Clearcoat, Aerosol Primer and Wax & grease remover wipe.
Aerosol platinum Kit - Includes Aerosol Colorcoat, Aerosol Clearcoat, Aerosol Primer, Wax & grease remover wipe, Tack cloth
Assorted sand paper pack, Polishing compound and Masking tape
Should I choose “Aerosol platinum Kit”, as it has everything I would need ? If so, then next step -
4- Use the wax/grease remover wipe and tack cloth to clean the area.
5- Primer: Apply if scratches reached bare metal. Let it dry.
6- Color: Spray NH‑700M in thin, even coats.
7- Clear: Spray clear coat after color fully dries.
8- Finish: Wet-sand lightly with the included paper to smooth any texture and Polish with the included compound to match surrounding gloss.