I don't think you'll find a perfect match in 8 dollar off the shelf selections. Rustoleum has a very close shade but its one of the hammered finish formulas. I didn't follow the application instructions to get the hammered finish. I'm satisfied with results of my minimal investment.
I used OEM paints for my 70 Cuda grill but they are way more expensive and 3 can minimum. I will say their Light Argent looks great as do all the other OEM Paints that I used.
Also used OEM Paint's Organisol (Tail Panel), Matte Black (F/R Spoilers), EF8 (Engine Bay) all in rattle cans.
All expensive and all 3 can minimum.
Did it when the engine was out a year before deciding to repaint the car. Just wanted to paint the replacement battery tray but it looked so good and with a 3 can minimum, I decided to do the entire engine bay.
People are always shocked when I tell them the engine bay was painted with a rattle can.