An extended version of the Noctis Lux theme for Visual Studio Code with custom colors, basically has some slightly darkened tones as I found the original was a bit too light.
Features
Custom background, gutter, minimap, and terminal colors
Custom styles for unused variables
Enhanced visibility for updated items in the file explorer
Installing from the Marketplace
Open Visual Studio Code.
Go to the Extensions view by clicking on the Extensions icon in the Activity Bar on the side of the window or by pressing Ctrl+Shift+X.
Search for "Noctis Lux Medium".
Click "Install" to install the theme.
Activating the Theme
After installing the extension, open the Command Palette by pressing Ctrl+Shift+P.
Type "Color Theme" and select "Preferences: Color Theme" from the dropdown menu.
Select "Noctis Lux Medium (DeanRTaylor's version)" from the list of available themes.