don't redefine moreblocks "wood tile"

(it isn't colorable :P )

init.lua

@@ -198,6 +198,8 @@ end
 		  or string.find(i.name, "moreblocks:panel_wood")
 		  or string.find(i.name, "moreblocks:micro_wood")
 		  or string.find(i.name, "moreblocks:slope_wood") then
+			local a,b = string.find(i.name, "wood_tile")
+			if not a then
 				local s1, s2 = is_stairsplus(i.name, false)
 				minetest.override_item(i.name, {
 					ud_replacement_node = "coloredwood:"..s1.."_wood_grey"..s2,
@@ -206,6 +208,7 @@ end
 				})
 			end
 		end
+	end
 
 	-- fix drops for colored versions of stairsplus nodes