Monodisperse colored spherical particles each having two separated color
regions of two hues, that is, two-colored spherical particles, useful,
for example, for displays of characters, graphics, images and the like,
the two hues being for reverse display in terms of electricity and
magnetism from the viewpoint of good suitability for display are
provided. In the production process and the apparatus for producing the
colored spherical polymer particles, microchannels are utilized including
a first microchannel through which a colored continuous phase comprising
a color dye/pigment dispersed in a fluid dispersing medium containing a
polymerizable resin component and having colored phases of different hues
is transferred, and a second microchannel through which a spheroidizing
disperse phase flows. The process and apparatus spheroidizes the
discharged colored continuous phase having two hues and cures the
polymerizable resin component in the colored continuous phase, whereby
colored spherical polymer particles are formed.