Redshift needs ACES color space to work properly, to install it:

Create a backup of default Blender colormanagement folder and delete it’s contents

\Program Files\Blender\blender-3.3.0-windows-x64\3.3\datafiles\colormanagement

Copy Redshift ocio folder contents to Blender colormanagement folder.

Redshift ocio folder is located in RS installation folder:

\ProgramData\redshift\Plugins\Blender\3.1.0\ocio

👉 Next step

Plugin setup & basic settings