Pentel EnerGel has been a very popular pen and now we get more colors. The silver, pink, and black have all been in our local box stationary stores. I added the dark blue and the gold from a seller in Japan. Now we get a light blue. I enjoy all the colors but I was surprised to see a dark and light blue. I would have gone with a red or green. So there are now six colors to choose from so add them all to your collection.