It's interesting to note that not only has the blue changed slightly through the years, but the yellow/gold font as well. In some it was more yellow while others was more gold.
I do really think Rolex needs to fix the smurf blue on the 116613 SUB-C. The color almost makes the bezel insert look like plastic. Not to flame any that have it, it's still a great looking watch, but I compared it side by side to the blue bezel insert on the YM2. The YM2 is slightly darker, less smurfy. I had my heart set on the blue SUB-C until I saw it in person and then went with the black one at the very last minute. It was a V serial, but I could tell by the date wheel font that it was an older V. It's strange, the blue one looks much better in pictures, it photographs very well. I do believe from experience that the G and Random serial bezels are just a tad darker than the older V serials. I haven't had two side by side, so it could have been the lighting, but I remember seeing a G and thinking it looked a little better, still not as good as the aluminum though.