Slime green.

Sun yellow.

Gun metal.  This is a different shade than the black, hard to see in the pic.

Big head Ron.  Again, shown with plastic skull for scale.  Ron has GITD eyes!  Ron also has his hole horizontal, all the other skulls have it vertical.

Ooooo, scary!  They glow really good and stay charged for longer than you'd think.

Emerson skulls are in stock now!