I got my Ruger SR9c yesterday and I just love it but at the end of the day, I was developing a callus on my thumb. It is caused by that sharp point on the thumb safety. I can easily file it down but then what should I do about the finish. I noticed the finish on the safety is not the same as the flat black finish on the slide release. Is it blue or black? If any of you have made that mod, a photo would be nice.