How very magical. It changes literally nothing in the game, but it smooths out my workflow something fierce. Managing individual palettes in GIMP is an exercise in frustration compared to box-selecting a ten-pixel area and toying with color values. That's not even counting the time saved on not having to copy and paste every hexadecimal color code. I can see this eventually expanding to user-made palettes, but that's another project for another time.
When did I code the original system? Why was it so bad? What was my excuse? We may never know. Unless I explicitly said in devblogs. Even still, though.