Based on the sources you linked, summer interns only worked on the guitar tuner and metronome functionality. I see no indication in the second blog post you lin

Based on the sources you linked, summer interns only worked on the guitar tuner and metronome functionality. I see no indication in the second blog post you linked that the same interns (or interns at all for that matter) had anything to do with the development of the color picker, encoders, etc.