Which Dungeon Door

Kyle, Neal, and Grant now find themselves trapped in a dark and cold dungeon (HOW they arrived there is another story.)  After a quick search the boys find three doors, the first one red, the second one blue, and the third one green.

Behind one of the doors is a path to freedom.  Behind the other two doors, however, is an evil fire-breathing dragon.  Opening a door to the dragon means almost certain death.

Given the fact that at LEAST ONE of the three statements on the three doors is true and at LEAST ONE of them is false, which door would lead the boys to safety?