That's correct. The color chart only states that the three translucent colors are (currently) only available on the 4004, not that they are the only colors.
I'm not sure how to make the
4004Cii page any clearer on this point.
The Blue Burst, like Fireglo, is really hard to depict using digital photography and everyone's individual monitor of unknown calibration. The color is a decidely electric blue, quite dark on the outside, fading to light in the middle, but not entirely clear maple in the middle (as Fireglo is).
Each of Mary Chapin Carpenter's blue guitars is somewhat different but this year's color is quite close to her 12-string acoustic, except that the shading extends more into the middle.