diff --git a/minetest/colorspec.lua b/minetest/colorspec.lua
index 18eec6d..e3ad028 100644
--- a/minetest/colorspec.lua
+++ b/minetest/colorspec.lua
@@ -245,6 +245,10 @@ function colorspec:to_number()
     return self.r * 0x1000000 + self.g * 0x10000 + self.b * 0x100 + self.a
 end
 
+function colorspec:to_number_rgb()
+	return self.r * 0x10000 + self.g * 0x100 + self.b
+end
+
 colorspec_to_colorstring = minetest.colorspec_to_colorstring or function(spec)
     return colorspec.from_any(spec):to_string()
 end