Ok, have a look at this picture:
Squall on a desert island. Look at the sky. And why is it green-ish?
Hold onto that thought and look at this image:
On the ground, it's green-ish. Where does that come from? Lifestream? Did Squall being on a desert island take place UNDER the throne room? Is that where JME was also held?
Maybe this is like an evil version of Lifestream ...