This theme has been designed with color schemes similar to WebStorm New UI.
The syntax highlighting follows the color palette of the WebStorm New UI, but there are some parts that purposely differentiate themselves from the WebStorm theme.
For example, I've applied italic styles to built-in objects, types and interfaces, making it easier to distinguish when writing code. There are more things besides this. Also, The syntax highlighting method between the dark theme and the light theme is slightly different.
Preview
New Light
New Light with Dark Header
New Dark
New Darcula
Installation
Open Extensions in VSCode's sidebar. (or From Command Palette (Ctrl+Shift+P), View: Show Extensions)
Search for WebStorm New UI Theme.
Click Install to install it.
From Command Palette (Ctrl+Shift+P), select Preferences: Color Theme and select a theme you want.