An individual person's answers on this kind of question are likely to vary from day to day, are context dependent (i.e. whether one object or another appears more "green" or "blue" depends on what kind of object it is), and colors this intense are very sensitive to changes in eye adaptation and technical details of the display and software, as well as inter-observer metamerism.
So in addition to the color naming difficulties, it's not even a very good test of color naming, if you want to get reliable psychometric/linguistic data.