Individually Color Code Time Slots

My use case is I want to create a morning routine and night routine slot that are different colors in order to grab my attention differently. The tasks in these routines are mixed project, so having a specific project labeled morning routine or night routine for each of these is confusing (e.g. if something I do for my morning routine is under "wellness", I don't want to have it in a "morning routine" project). Also, having separate projects for these clutters up the workspace.

Ideal use case would be when I set up a slot, I can click on the slot and change the color of the event. Right now, I use this functionality for "morning routine" and "evening routine" slots, which are daily recurring slots with tasks coming from multiple projects.