colored metal signs optional and display size

That a small change but for someone who try to prevent having one craft guide page per item (and multiples variants) it make all the difference :)
This mod is great but it would be even greater if it was easier to configure
like an option use_big_font_size that would change CHARS_PERLINE from 30 to 12  and NUMBER_OF_LINES from 6 to 3
(I tried to do that but I failed)

init.lua

@@ -9,6 +9,8 @@
 --		{ delta = {entity position for 270° yaw}, exact yaw expression }
 --		{ delta = {entity position for 90° yaw}, exact yaw expression }
 -- }
+-- Made colored metal signs optionals
+local enable_colored_metal_signs = true
 
 -- CWz's keyword interact mod uses this setting.
 local current_keyword = minetest.setting_get("interact_keyword") or "iaccept"
@@ -844,7 +846,7 @@ if minetest.registered_nodes["default:sign_wall_steel"] then
 end
 
 -- metal, colored signs
-
+if enable_colored_metal_signs then
 	local sign_colors = { "green", "yellow", "red", "white_red", "white_black", "orange", "blue", "brown" }
 	local sign_default_text_colors = { "f", "0", "f", "4", "0", "0", "f", "f" }
 
@@ -886,6 +888,7 @@ for i, color in ipairs(sign_colors) do
 			end,
 		})
 	end
+end
 
 local signs_text_on_activate
 
@@ -1022,6 +1025,7 @@ minetest.register_craft({
 })
 
 -- craft recipes for the metal signs
+if enable_colored_metal_signs then
 
 	minetest.register_craft( {
 		output = "signs:sign_wall_green",
@@ -1150,6 +1154,7 @@ minetest.register_craft( {
 				{ "steel:sheet_metal", "steel:sheet_metal", "steel:sheet_metal" }
 		},
 	})
+end
 
 if minetest.setting_get("log_mods") then
 	minetest.log("action", S("signs loaded"))