I assume you have a stainless steel Ranch with the synthetic stock. I had the same scope, but in black, on my stainless steel synthetic Ranch. I was going to get it in silver to match the stainless but the finish on the silver scope just looks a little cheesy to me. It doesn't really look like stainless steel. So instead, the black matches the stock. ;D
Although, I should have gotten some black rings from Ruger, and I may still. They would look better with the black scope. It's all just personal preference, though. That's an excellent scope for the price and perfect for the Mini.