User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-58.7.139.55-20120626152118/@comment-3318452-20120626153621

Well, originally Tigrex is living in the desert, and thus the orange coloration comes from. As for the blue ones - maybe it is a sort of a trick to lure herbivores, who from distant may think that this blue color means a source of water? So he doesn't need to run around like mad but instead have an ability to lure these guys a bit closer. Just thinking:]