This is RED/Green/Blue color changing
The MindOrbit shooter rod has a flashing LED built into the ball. Installation takes about 15 minutes. The light goes out when the rod is pulled.
The kit is available with pearlescent or faceted balls, and fast flashing color changers, or slow smooth color changers.
Power is delivered through the rod and barrel spring. there's one wire to connect.
Here's a simple animation that will give you an idea of what it looks like.