Vinegar and elbow grease will also remove the blue.Use fine 4-0 steel wool or fine bronze wool.
Do not buff is my advice. It will probably look just fine when the blue is gone.
I would not recolor unless you refinish the stocks and other metal.
Best,
John


Humble member of the League of Extraodinary Gentlemen (LEG). Joined 14 March, 2006. Member #1.