I thought I would just offer you my two cents worth if you find it helpful or not?
In answer to your question: green mucus is a sign of bacterial or viral infection. Mucus is normally white in color and serves a useful purpose within the body. This can progress thru yellow to green, if the above infection is present.
You will not be able to clear ANY infection of any kind unless you have s strong immune system, and your body is free from toxemia; both of which are the product of sound and healthy living habits, and especially with nutrition.
Your trich of several years ago was NOT cured if it has re-occurred: only the symptoms were eradicated. The cause has yet to be addressed in any meaningful way..............
#1. Free your body of toxemia via fasting and proper food combining thereafter, and adhere to the laws of your being, which when violated will only produce more health problems eventually.
#2. Build a strong immune system via a nutrient-dense diet of a plant origin.
Therein lies your answer.