Sblack is a little free Mac app that applies a Dark Theme to Slack for Mac to make it easier on your eyes. Just drag and drop and you're done!
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!
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.)
"Intro" is an HTML theme built specially for developers. It helps you build your personal brand by showcasing your story, skills, tools, and projects.
The theme comes in 10 color variants and built-in static website generator.