Aesthetics aside, from my POV if they are the proper base(s) for the rifle and the proper height rings for the scope, rings are rings and bases are bases. These days, I mostly use B-Square, Leupold, and Warne rings and bases and will, mostly, use whatever I have hanging on the pegboard above the workbench or whatever is least expensive or on sale. Matte finished rings and bases seem to be more common these days. Cabela's just closed out a bunch of Leupold QR rings in a variety of heights and finishes and I bought many in all of the available heights and finishes, except for the extra highs.

I hadn't thought about Scott's suggestion of using an inter-finish mix of colors; gloss, gunmetal grey, matte, or silver for Leupold options. But it would be something to change up the routine.

Jeff