Systems and rules in music allow you to come up with things that your sense of taste would never have allowed you to do. But then your sense of taste expands to accommodate them! For instance, I'm sitting here now looking at something that my Stained Glass machine just made on my monitor. It has color combinations in it that are so weird. I would never dream of putting these things together. But, soon they start to look pretty good, and then they start to look really good.