I have a 2.3 range serial numbered colt. The slide and frame do not match in color. The frame has the greenish military parkerizing and the slide is a flat black finish. I wish to either replace the slide or refinish it to better match the frame. Any of you guys have suggestions? I understand this pistol to be a "OG" rebuild and someone must have switched the slide to have a complete colt.

Thank you in advance for any help.