Stop alerting when a theme ships no backgrounds

bin/blob-theme-set

@@ -108,7 +108,6 @@ set_theme_background() {
   local new_background new_background_snapshot
 
   if ! choose_theme_background; then
-    blob-notify-send "No background was found for theme" -t 2000
     shell_ipc shell applyTheme "$colors_payload" "$shell_payload" || true
     return
   fi

docs/themes.md

@@ -9,7 +9,7 @@ retints the running desktop.
 | File | Used by |
 | --- | --- |
 | `colors.toml` | required; the palette everything else derives from |
-| `backgrounds/` | the background switcher |
+| `backgrounds/` | the background switcher; a theme without one keeps the current wallpaper |
 | `shell.lock.toml` | lock screen surface tokens |
 | `neovim.lua` | the editor colorscheme |
 | `icons.theme` | GTK icon theme name |