Defining Groups of LEDs

Yes, I agree on the "using a library"-part. But that's not manhandling the color arrays in my opinion. The library is the interface between the Arduino and the leds. Which leds you want to show which color is up to the person using the library. So many wishes, so many implementations. So impossible to have a (at least not self written) library that just happens to exactly a very specific task you happen to need.