diff --git a/specs/udmf_zdoom.txt b/specs/udmf_zdoom.txt
index 12c7c168d..8cb110321 100644
--- a/specs/udmf_zdoom.txt
+++ b/specs/udmf_zdoom.txt
@@ -277,10 +277,10 @@ Note: All <bool> fields default to false unless mentioned otherwise.
       color_wallbottom = <int>;       // Material color of bottom of sector's sidedefs (OpenGL 3.x and later only) Default is white (0xffffff)
       color_sprites = <int>;          // Material color of sprites in sector. Default is white (0xffffff)
 
-      color_flooradd = <int>;         // Additive material color applied to the sector floor. Default is black (0x000000)
-      color_ceilingadd = <int>;       // Additive material color applied to the sector ceiling. Default is black (0x000000)
-      color_spritesadd = <int>;       // Additive material color applied to sprites within the sector. Default is black (0x000000)
-      color_walladd = <int>;          // Additive material color applied to walls within the sector. Default is black (0x000000)
+      coloradd_floor = <int>;         // Additive material color applied to the sector floor. Default is black (0x000000)
+      coloradd_ceiling = <int>;       // Additive material color applied to the sector ceiling. Default is black (0x000000)
+      coloradd_sprites = <int>;       // Additive material color applied to sprites within the sector. Default is black (0x000000)
+      coloradd_walls = <int>;          // Additive material color applied to walls within the sector. Default is black (0x000000)
 
       portal_ceil_blocksound = <bool>;     // ceiling portal blocks sound.
       portal_ceil_disabled = <bool>;       // ceiling portal disabled.
diff --git a/src/namedef.h b/src/namedef.h
index bf8f63b60..57207eed9 100644
--- a/src/namedef.h
+++ b/src/namedef.h
@@ -584,7 +584,10 @@ xx(Color_Ceiling)
 xx(Color_Walltop)
 xx(Color_Wallbottom)
 xx(Color_Sprites)
-xx(Color_Add)
+xx(ColorAdd_Floor)
+xx(ColorAdd_Ceiling)
+xx(ColorAdd_Sprites)
+xx(ColorAdd_Walls)
 xx(Desaturation)
 xx(SoundSequence)
 xx(Silent)
@@ -656,7 +659,9 @@ xx(clampgradient_bottom)
 xx(useowncolors_bottom)
 xx(uppercolor_bottom)
 xx(lowercolor_bottom)
-
+xx(coloradd_top)
+xx(coloradd_mid)
+xx(coloradd_bottom)
 
 xx(Renderstyle)