Themer takes a set of colors and generates text editor themes, terminal themes, and desktop/device wallpapers. (As well as themes for other apps like Slack and Alfred.)
Rainglow Color Themes is a collection of 320+ original color themes created by Dayle Rees for a variety of editors including VSCode, Jetbrains IDEs, Sublime Text, Atom and more. All themes feature a contrast and light variation. I hope you enjoy them!