Re: AANJ screws
Finding what you need when you don't have screws to compare them to is difficult. Rich has told me to go to the hardware store before too but I still bought a set from him because at least I had one correct set to search for.
Saying that, I paint screw heads all the time if they are screws that are not easily attainable.
I take a wire wheel to them first and clean off the years of crap in the crevices and then paint them, black normally. They look great. Use a flat black and it looks like the anodized black. When it wears off, paint them again.