There is also a 5th element and that is Akasha, or Spirit/Ether.

 

Earth represents the direction of North and it's elemental is the gnome.

 

Air represents the direction of East and it's elemental is the Sylph.

 

Fire represents the direction of South and it's elemental is the Salamander.

 

Water represents the direction of West and it's elemental is the undine.

 

Earth's color is green.

 

Air's color is yellow.

 

Fire's color is red.

 

Water's color is blue.