**As** a user on OpenProject
**I want to** be able to configure the Interface color mode to automatically sync with my Operating System
**such that** when my OS preference is dark, OpenProject adapts the "Dark" color mode And when it's "light" it adapts the "Light" color mode
**And** I also want to be able to specify Contrast options for the color modes
**so that** the color contrast mode is selected if I prefer the High Contrast modes

**Acceptance criteria**

* When I navigate to "Account Settings" Begin of the insertion→  "Interface" →End of the insertion Begin of the deletion > "Interface" >End of the deletion "Color mode", a new option **"Auto (system default)"** should be available

* When I select the "Auto (system default)" and change my OS theme to "light" mode, then OpenProject automatically switches the theme to "light" mode (vv Dark mode)

* Begin of the insertionIfEnd of the insertion Begin of the deletion IFEnd of the deletion I have selected an "Increase contrast" mode on "Light mode" And the current OS theme is "light" then the "Light High Contrast" mode should be selected


**Permissions and visibility considerations**

* This is a User specific preference, so it should be treated as such


**Out of scope**

* Dark High Contrast


_Set the_ **To be informed/consulted teams** _field to include all teams necessary to be informed of the changes._