diff --git a/doc/zenbones.md b/doc/zenbones.md
index fcf400b..0df20ae 100644
--- a/doc/zenbones.md
+++ b/doc/zenbones.md
@@ -58,9 +58,9 @@ Default: `v:false`. Lighten LineNr background.
 
 Default: `v:false`. Make FloatBorder more distinguishable background highlight.
 
-#### g:zenbones_dim_noncurrent_window
+#### g:zenbones_darken_noncurrent_window
 
-Default: `v:false`. Make non-current window background dimmer than _Normal_.
+Default: `v:false`. Make non-current window background darker than _Normal_.
 
 #### g:zenflesh_lighten_noncurrent_window
 
diff --git a/lua/zenbones/specs/dark.lua b/lua/zenbones/specs/dark.lua
index c609bc0..2bf5366 100644
--- a/lua/zenbones/specs/dark.lua
+++ b/lua/zenbones/specs/dark.lua
@@ -9,7 +9,7 @@ local function generate(p, opt)
 		normal_bg = p.bg_warm
 	elseif opt.darkness ~= nil then
 		local error_msg = "Unknown darkness value: " .. vim.inspect(darkness)
-		vim.notify(error_msg, vim.log.levels.WARN)
+		vim.notify(error_msg, vim.log.levels.WARN, { title = "zenbones" })
 	end
 
 	-- stylua: ignore start
diff --git a/lua/zenbones/specs/init.lua b/lua/zenbones/specs/init.lua
index a446d62..6ac22fc 100644
--- a/lua/zenbones/specs/init.lua
+++ b/lua/zenbones/specs/init.lua
@@ -7,9 +7,16 @@ function M.get_global_config(prefix, base_bg)
 		comment_gui = vim.g[prefix .. "_italic_comments"] ~= false and "italic" or "NONE",
 	}
 	if base_bg == "light" then
+		if vim.g[prefix .. "_dim_noncurrent_window"] then
+			vim.notify(
+				prefix .. "_dim_noncurrent_window is replaced by " .. prefix .. "_darken_noncurrent_window",
+				vim.log.levels.ERROR,
+				{ title = "zenbones" }
+			)
+		end
 		return vim.tbl_extend("keep", {
 			lightness = vim.g[prefix .. "_lightness"],
-			dim_noncurrent_window = vim.g[prefix .. "_dim_noncurrent_window"],
+			darken_noncurrent_window = vim.g[prefix .. "_darken_noncurrent_window"],
 			darken_comments = vim.g[prefix .. "_darken_comments"],
 			darken_line_nr = vim.g[prefix .. "_darken_line_nr"],
 		}, common)
diff --git a/lua/zenbones/specs/light.lua b/lua/zenbones/specs/light.lua
index a5976db..60b7387 100644
--- a/lua/zenbones/specs/light.lua
+++ b/lua/zenbones/specs/light.lua
@@ -9,7 +9,7 @@ local function generate(p, opt)
 		normal_bg = p.bg_dim
 	elseif opt.lightness ~= nil then
 		local error_msg = "Unknown lightness value: " .. vim.inspect(lightness)
-		vim.notify(error_msg, vim.log.levels.WARN)
+		vim.notify(error_msg, vim.log.levels.WARN, { title = "zenbones" })
 	end
 
 	-- stylua: ignore start
@@ -381,7 +381,7 @@ local function generate(p, opt)
 		base_specs,
 	}
 
-	if opt.dim_noncurrent_window then
+	if opt.darken_noncurrent_window then
 		table.insert(
 			specs,
 			lush(function()