- Tap your picture at the top left.
- Tap your profile at the top of Profile & Settings.
- Tap Edit Appearance.
- Choose Initials or Emoji and pick a Color, then go back and tap the checkmark (or Done) to save.
Each profile gets its own color automatically, so you can tell them apart. The picture shows at the top left of every tab.
Choosing a profile’s look is part of Premium. You can try any color or emoji first. An emoji picked on a newer device that this one can’t show appears as the profile’s initials here.