Sadly, this page does not actually do the randomization for you. You'll need to put in the details yourself into the RPG Maker VX Ace Character Generator. You may have noticed that the VX Ace Character Generator already has a "Generate Random" button. However, it only randomizes the hair, and most features of the face. This randomizer picks values for everything.
Colors will be indicated numerically from top to bottom, starting from one (1).