Add configuration for GNOME

.zshrc

@@ -75,6 +75,15 @@ compdef '_arguments "--force[skip safety checks / reinstall]"' dotfiles-install
 # Complete the `--quieter` flag of the `generate-shell-completions` utility in ~/.local/bin
 compdef '_arguments "--quieter[suppress the reload hint]"' generate-shell-completions
 
+# Complete the flags of the `color-palette` in ~/.local/bin
+# => Keep the (short) descriptions in sync
+#    with the `argparse` section in ~/.local/bin/color-palette
+compdef '_arguments \
+    "--scheme[Override the live GNOME color-scheme]:scheme:(dark light)" \
+    "--show[Show the derived colors as swatches]" \
+    "--write[Write the palette into all consumer files]"' \
+    color-palette
+
 # Enable match highlighting and scrolling through long lists,
 # and provide a different style of menu completion
 zmodload zsh/complist