Windows 10 Creators Update

Windows 10 Creators Update (also known as version 1703 or Redstone 2) is an update for Windows 10. It was released on 2017-04-11.

Personalization Control Panel
Starting with version 1703, theme section are there in the Settings app. Version 1703 - present still contain all working classic applets like Desktop Background, Color and Appearance and Personalization. Microsoft just hides them from the classic Control Panel. They can be opened using appropriate commands:
 * Personalization:
 * Desktop Background:
 * Color and Appearance: