You can customize the themes and colors for displayed items or apply the Sig- nature , Analog , Kaleidoscope , Digital , or Select background display to the always-on display.
1.Go to
Settings > 
Always-on display & Lock screen > Always-on display.
2.Tap the corresponding items such as Signature , Analog , or Kaleidoscope to customize the themes, colors, and other settings for displayed items.
3.Tap Apply to apply the customized displayed items.
1.Go to
Settings > Always-on display & Lock screen > Always-on display.2.Tap the corresponding items such as Signature , Analog , or Kaleidoscope to customize the themes, colors, and other settings for displayed items.
3.Tap Apply to apply the customized displayed items.