Kanzenshuu - The Podcast

Episode #0407! Mike and Meri discuss the "change" of Trunks' hair color from lavender to blue for the "Dragon Ball Super" TV series. What has Akira Toriyama said about these kinds of changes in the past, and what circumstances might have led to this situation? Is this lack of consistency even a worthwhile conversation to have, or is it yet another overblown production nugget?