The LG V30 has the ability to use different themes. It comes with a few out of the box and you can download more from the Play Store.

1. Go to Settings > Theme
2. Select one of the preloaded themes
3. Tap APPLY

OR

1. Tap the download icon in the top right
2. This will open the themes section in LG SmartWorld

OR

1. Search for LG V30 theme in the Play Store
2. Download a theme
3. Apply it as you would a normal theme