Curl,
To my eye, I think a 'gray gun' looks odd with the wood stipped, and leached of aged colors. On the other hand, refinished metals with old finish wood still looks o.k. to me. But, a new or freshly refinish stock should get refinished metal to match, to my taste anyway. I recently had to make that call on a Fox that I was having restocked. The craftsman doing the work said he'd recommend refinishing the metal at the same time. I agreed and it came out nice. The picture of that gun is the one I posted in this thread earlier.