-----------------------------------------------
         |  Color Matcher                              |
         -----------------------------------------------
         |     RED         GREEEN       BLUE
         |  -----o----- -----o------ ------o--------   |
         |     7F            35           4A           |
         |---------------------------------------------|
         |                                             |
         |                                             |
         |     field of color                          |
         |                                             |
         |                                             |
         |                                             |
         |                                             |
         |---------------------------------------------|