I have to admit I have not been able to find a rattle can to match the dark gray paint on my NX4510. The Duplicolor Chevrolet Orange was a good match for the orange. It's a touch darker than the orange on the hood, but it's barely noticeable. For the gray, I started with implement gloss black and it very evident the tractor was actually a dark gray when testing the gloss black. I then tried "dark ford gray", but it was too light. From this thread, I tried the Rustoleum #7784, but it was still way too light. I want to weld a chain grabber hook on the top-center of the bucket which has me on the pursuit to find a matching paint.