The green definitely indicates an infection. And there are things that can contribute to this such as allergies, the use of antihistamines, and injuries or surgery to the sinuses. In the later cases the scar tissue can trap pathogens in the damaged tissues where little pockets can form.
The bad news is that the majority of sinus infections are not caused from bacteria, but rather fungi. And fungal infections are extremely difficult to get rid of. All it takes is a few surviving cells or spores in the warm moist environment and the infection will rebound. To make things worse the doctors almost always prescribe antibiotics without doing a culture first. Antibiotics only make fungal sinus infections worse as the antibiotics kill off the sinus flora. Even ozone does not knock out fungal sinus infections completely. So it sounds like you likely have a fungal infection.
My recommendation is to try and reestablish the flora in your sinuses. The best way to do this is to get some Acidophilus powder, not capsules. The capsules are going to have flow agents and other items that you don't want in your sinuses. Put some powder in a water bottle cap and add just enough water to make a thick liquid. Then lay down and put your head back. Use an eyedropper to put a little of the liquid in the nose and snuff it up in the sinuses. Repeat this several times a day. It will probably take a week or so for the numbers to build up enough to see a real difference. If you can make some kefir water to use instead of the Acidophilus then that would be even better.
Keep working on your adrenals for the allergy component and avoid antihistamines or anything that will dry your sinuses up.