Theme "Tintenblau" (dark and light)

Palette from the Tintenblau desktop theme (colors.toml, neovim.lua, zed.json):
ink blue with cream text, paper with dark ink. Also in the terminal client's
palettes.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -296,6 +296,7 @@ in turn are based on:
 | Coffee | Dark, Latte | [megabyte0x/omarchy-coffee-theme](https://github.com/megabyte0x/omarchy-coffee-theme) | MIT |
 | Solarized | Dark, Light | [Solarized by Ethan Schoonover](https://ethanschoonover.com/solarized/) | MIT |
 | Tokyo Night | Night, Day | [folke/tokyonight.nvim](https://github.com/folke/tokyonight.nvim) | Apache-2.0 |
+| Tintenblau | Dark, Light | original (zink/tintenblau desktop theme) | private |
 
 Further standard themes (palettes re-created from the published colour specifications):