In this set you have 4 paints selected by Seth Apter:

Key Lime - an opaque pale yellow with green tones
Green Patina - an opaque shade of copper once it has turned green
Smoked Paprika - a translucent orange
Mud Splat - an opaque, cool brown

These colours are designed to work WITH Seth's first paint set. You now have loads more colour options when you combine both sets.