From what I have read thus far the DPP (Blue) leaned a little too much on the China situation creating fear, uncertainty, and doubt about Taiwan's future. KMT (Green) is pro China relations so it was a safer bet. China even stepped up military incursions to support the KMT in the pre election run up.
Personally I think the Taiwan president's undoing was the visits from US politicians, Pelosi being the worst one. It really was unnecessary. US politics is a dirty business unlike Taiwan's and most other countries around the world.
I think the most interesting story is the new mayor of Taipei Wayne Chiang. He worked at Wilson Sonsini here in Silicon Valley doing VC work.
en.wikipedia.org
"Chiang Wan-an was a teenager when his father sat him down to tell him about his heritage: he’s the great-grandson of Chiang Kai-shek, the Chinese Nationalist leader who fought Mao Zedong’s Communists forces before fleeing to Taiwan and ruled it with an iron fist."
He could change the face of the KMT, absolutely.