Oh my, if it were digital inked it would look like the Fairly OddParents/Danny Phantom
There were actually two instances of digital ink and paint experimentation in season 1, one in SB-129, and the other in Jellyfish JamYour Shoe's Untied was the first episode to use digital ink and paint, and my assumption is they made the outlines bigger so the scanner can read the images:
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There were actually two instances of digital ink and paint experimentation in season 1, one in SB-129, and the other in Jellyfish Jam
The music sounded so orchestrated and holy crap was it amazing. I heard it was fully synthetic.