VS Code is my darling editor at the time: Open source, cross-platform, lightweight, highly customizable and with an amazing community. If you haven't tried it yet, try it!
Also check: Icon Packs for VS Code
I separated a list with 6 themes that I have already used and approved:
One of the darlings of the community, the Nigh Owl theme was developed by Sarah Drasner and it has optimized colors for those who like to work in the dark.
Another darling of the community and currently my topic of choice. A dark theme with strong yet pleasant combinations and contrasts. It has packages for almost all IDEs on the market and is also available for terminals, messaging applications and much more.
For those who are migrating from atom, One Dark Pro will make you feel at home.
If you're looking for variety, Rainlow it's your choice: A collection of 320+ color matching themes.
With soft combinations this is a theme for those looking to rest their eyes. It has light and dark variations.
Monokai Pro is a color scheme, custom interface and also a very complete collection of icons for Visual Studio Code.
A professional theme with several handpicked vibrant shades of purple for your VS Code editor and terminal.