I2C Encoder fading feature

In the previous video, we have published our new Kickstarter Campaign_I2C Encoder.
Now we added a new feature on it, check out details on kickstarter:
In the video, every time when the encoders are rotated, the green LED turns on, while red LED (for RGB Encoder) and blue LED (for the normal Encoder) turn on when the thresholds are reached.

The yellow channel is the INT pin, while the other channels are the I2C bus.
As you can see, there is no I2C traffic during the fading. There is I2C traffic only when i move the encoder and when the fading reaches the target value.
I have uploaded the code example showed in the video in GitHub: