OK, full disclosure as to why I asked this question. I own 2 Vaqueros and a stainless Blackhawk, all of which have steel frames. I ordered this current Blackhawk online, and since Ruger lists the frame as "alloy steel", I assumed is was the same as my Vaqueros. My intention was to add some Power Custom parts, have the frame Color case hardened and everything else refinished in a high polished blue. I took the gun to Scott Kolar and had some custom (and very expensive) grips made for this frame. I finally got around to adding the Power Custom parts, and it was at this point I realized I have an aluminum frame, not steel as I had assumed all along. I also found that there's a new Lipsey's model that is already close to what I wanted to accomplish.
I then figured I would just sell this Blackhawk and put the money towards the Lipsey's model. The problem is that I wanted to keep the custom grips, but they don't fit my other Blackhawk as they were made specifically for the alloy frame. So now I feel like I'm stuck with this frame. With that being said, I figured I would go in a completely different direction and turn it into a 2 tone stainless/blue sort of look, which is why I was asking about refinishing the frame. If I hadn't already had those grips made, I would have just sold the gun or bought another frame.
I appreciate everyone's suggestions. I'm not a fan of Cerakote but that may be the cheapest and easiest way to go.