Skyshipping

Skyshipping is the ship of Alizarin Chrise and Viola Murasaki. It is most likely canon in both timelines, but it is shown only in the trilogy. Currently in the trilogy, Alizarin has expressed interest in Viola, but the latter is unsure about her feelings about him. However, by Evermore, they are married with four children, Alton, Akane, Violet, and Ion.

Hints
Forevermore:
 * When Topaz meets Alizarin, she says that Viola has been talking about him. After that, Alizarin blushes and Topaz guesses that he liked Viola.
 * They are often seen bickering.
 * Alizarin often calls her an old hag, while Viola retorts by calling him a squirt.
 * When Jade mentions Alizarin possibly liking Viola, Viola becomes annoyed with her, and denies the possibility of him liking her.
 * Indigo notes that Jade is also trying to get Alizarin flustered with Viola's makeover.
 * After seeing Viola after Jade had dressed her up, Alizarin became very flustered, calling her old hag.
 * On Valentine's Day, Alizarin goes to Viola, practically throwing a box of chocolates to her. To her shock, it wasn't just some generic brand of chocolates, but her favorite kind.

Trivia

 * The ship name is probably derived from their names; Viola means purple and Alizarin means red. Red + Blue = Purple, and sky is a shade of blue.
 * Alizarin was created by Starran.