morhetz/gruvbox ? reverse-engineered prompt

Build me a Vim color scheme called gruvbox that has a warm retro feel, with soft pastel colors, strong contrast, and both dark and light modes. I want it to be easy on the eyes but still make text, comments, code, and UI elements clearly distinct. Please include a bunch of useful customization options like different contrast levels, italics on or off, and color inversion if that makes sense.

It should also look good with common Vim plugins and extras like status lines, file tree tools, git markers, fuzzy finders, and syntax helpers, so the theme feels polished across the whole editor. Make sure it supports a wide range of file types and still stays consistent.

If you need to check current Vim docs or best practices for colorschemes, go ahead and look them up online. I’d like it to feel like a complete, ready to use theme that people can drop into Vim and start using right away.