Your site rocks and "rolls!" I am giving marbles, game instructions, and nets of marbles to all the kids I know including my own. This is such a fun game to share and you have everything an enthusiast could ask for on your site.
Size is as-packaged, or the diameter of loose marbles. ("D" is the diameter of round items other than marbles.)
Superboy is a classic name for this color combination - opaque light blue marbles are covered with a blizzard of red spots. The marble is about 50/50 red and blue, with the poles revealing the base color.