You will have to do a water changes to get rid of the green color, it wont go away on its own. Carbon will also help remove the color. Just make sure to complete the treatment before adding the carbon. It will remove meds from the water.
Have you had this happen to you before? Stained silicone that is. I wonder if I should end the treatment and go with another one like Melafix. Just so everyone knows, I was using the API fungus cure to treat for eye cloud on one of my fish.