diff --git a/neovim/README.md b/neovim/README.md
index a9bdada..57f4af4 100644
--- a/neovim/README.md
+++ b/neovim/README.md
@@ -39,6 +39,12 @@ machine gets the same set.
 
 ## Defaults worth knowing
 
+- **The colorscheme is catppuccin**, `flavour = 'auto'`: latte on a light
+  `background`, macchiato on a dark one. The TUI sets `background` from the
+  terminal at startup, so a fresh nvim matches the system appearance. A running
+  one does not follow a live change — but `:set background=light` (or `dark`)
+  swaps the flavour too, since Neovim reloads the colorscheme whenever
+  `background` is set.
 - **Spell checking is on globally**, `en_gb` — in every buffer, code included,
   not just prose filetypes.
 - **Autocompletion is on** via Neovim's own `vim.o.autocomplete`, with a rounded
diff --git a/neovim/config/plugins/catppuccin.lua b/neovim/config/plugins/catppuccin.lua
new file mode 100644
index 0000000..b126852
--- /dev/null
+++ b/neovim/config/plugins/catppuccin.lua
@@ -0,0 +1,12 @@
+vim.pack.add({ { src = 'https://github.com/catppuccin/nvim', name = 'catppuccin' } })
+
+require('catppuccin').setup({
+  -- Follow 'background', which the TUI sets from the terminal on startup
+  flavour = 'auto',
+  background = {
+    light = 'latte',
+    dark = 'macchiato',
+  },
+})
+
+vim.cmd.colorscheme('catppuccin')
diff --git a/neovim/config/plugins/init.lua b/neovim/config/plugins/init.lua
index fc2c8eb..7046983 100644
--- a/neovim/config/plugins/init.lua
+++ b/neovim/config/plugins/init.lua
@@ -1,3 +1,5 @@
+-- The colorscheme goes first so everything after it is drawn with it applied
+require('config.plugins.catppuccin')
 require('config.plugins.diffview')
 require('config.plugins.fzf-lua')
 require('config.plugins.gitsigns')
diff --git a/neovim/nvim-pack-lock.json b/neovim/nvim-pack-lock.json
index 335a0f8..c80ef95 100644
--- a/neovim/nvim-pack-lock.json
+++ b/neovim/nvim-pack-lock.json
@@ -1,5 +1,9 @@
 {
   "plugins": {
+    "catppuccin": {
+      "rev": "edefef779ab08ce1a4a404713e3012b0d202bd35",
+      "src": "https://github.com/catppuccin/nvim"
+    },
     "diffview.nvim": {
       "rev": "4516612fe98ff56ae0415a259ff6361a89419b0a",
       "src": "https://github.com/sindrets/diffview.nvim"