Yeah because you need a controller and a led strip. That being said, if you want to get into microcontrollers, it’s not hard, but it requires some soldering/programming. All depends on your expected volume and whether or not it’s interesting as a challenge for you.
If I were in your shoes and didn’t want to get into buying strips of ws2812b or apa102 LEDs I might buy these bases and then take them apart, putting the guts into whatever custom enclosure I had in mind.
Here’s an example of the more in depth microcontroller method, and you can see how I was able to make a very custom piece.