Brown discharge is completely normal and is just old blood, though green discharge can be a symptom of something else, but doesn't always have to be. At times that discharge can be normal as well with certain hormone fluctuations. I wouldn't worry about it unless it begins to give you problems and there are other symptoms involved(begin to get itchiness, swelling, different odor, pain, or anything else).
I've had no pain or swelling etc. But I do wonde because it's more brown sometimes than it is green. Is this odd?
Brown discharge is completely normal, as it is just old blood, which I would worry about, as long as you don't experience other symptoms along with it.