Adafruit has an excellent tut on controlling RBGW arrays via a pi pico and circuit python (or a lot of other controllers. or whatever.) I built the niece a night light/bed lamp (along with a white noise generator) It has a number of different odds and ends to control it, including five rotary encoders that also have push-button switches… it didn’t take her too long to learn that, if the button switches happen to be pushed in the right sequence… “Party Mode” comes on, with rainbow flashy goodness.

The, uh, sequences keep mysteriously changing and getting tougher for some strange reason…