What Causes Runny, Discolored And Smelly Stools Post Gallbladder Removal?

Hi. I am a 49 year old female. I recently (6 mths ago) had my gall bladder removed. Since then I have had irregular bowel motions. Recently tho, about 2 months, it does not matter what I eat and I will be running to the toilet. My bowels can move 4-6 times a day and they are always runny (like water) and very smelly. They also vary in colour, from orange, black or green. I very rarely have a solid motion.