An odd easter egg only present in the Playstation 2 version of the game.
If your character's name, title and job class all add up to 28 or 29 letters, their stat allocation screen will be blue. If they all equal 30 letters, it will be red. This seems to have no effect on your stat growth or anything, it's just an odd easter egg.
As a result of the requirements, only a few classes can perform this trick:
(11-letter job + 7-letter title + 12-letter name = Red screen)
(10-letter job + 7-letter title + 11-letter name = Blue screen)
(10-letter job + 6-letter title + 12-letter name = Blue screen)
(9-letter job + 7-letter title + 12-letter name = Blue screen)
This information comes courtesy of GrimX9's post on the Onionbat forums: