Model Railroading > Heritage Paint Matching

I just received three more heritage engines last week. Kato did and excellent job! As you are well aware they did not include cab shades on the the engines. I would like to install some. I am wondering if anyone has found a paint match for both shades of red on the Katy, the light blue on the Mop, and the gray for the DGRW and WP? I asked this question awhile back are receiving the DRWG unit and I believe someone said they used CSX gray.

Thanks in advance for your input!