diff --git a/init.lua b/init.lua
index ccf4778..3fc76da 100644
--- a/init.lua
+++ b/init.lua
@@ -318,7 +318,6 @@ minetest.register_node("maptools:lightbulb", {
 	pointable = false,
 	light_source = 15,
 	paramtype = "light",
-	buildable_to = true,
 	sunlight_propagates = true,
 	drop = "",
 	groups = {unbreakable=1, not_in_creative_inventory = maptools_creative},
@@ -360,7 +359,6 @@ minetest.register_node("maptools:climb", {
 	walkable = false,
 	climbable = true,
 	pointable = false,
-	buildable_to = true,
 	paramtype = "light",
 	sunlight_propagates = true,
 	drop = "",
@@ -409,7 +407,7 @@ minetest.register_node("maptools:smoke", {
 	paramtype = "light",
 	drop = "",
 	groups = {unbreakable=1, not_in_creative_inventory = maptools_creative},
-	post_effect_color = {a=127, r=127, g=127, b=127},
+	post_effect_color = {a=192, r=96, g=96, b=96},
 })
 
 minetest.register_node("maptools:ladder", {