Set Theme to Preferred Color Scheme

[Nomandes]

Description

As a user, i want to apply my preferred color scheme automatically or choose to set it manually

Acceptance Criteria

• The "Change Theme Button" opens a menu containing the buttons "Use System Settings", "Dark Theme", "Light Theme"
• The option "Use System Settings" checks the prefers-color-scheme CSS option and applies the preferred scheme automatically
• Per default the color scheme is set after the preferred color scheme
• The users theme choice is saved in local storage

Implementation

Preferred color scheme can be extracted via CSS: Link