In a medium bowl add eggs and milk and whisk until beaten.
Add food coloring and stir until completely green. Set aside.
Heat a large skillet over medium heat.
Coat with non stick spray.
Once the skillet is hot add the beaten egg mixture and cook, tipping pan to cook eggs, until halfway cooked and sides start to rise from the pan.
Sprinkle on ham and cheese then fold half of the omelet over.
Gently flip over with a spatula and cook the rest of the runny egg then slide onto a plate.
Sprinkle with additional cheese and serve warm.