diff --git a/src/r_data.c b/src/r_data.c
index d19882dd3..e1d4b8935 100644
--- a/src/r_data.c
+++ b/src/r_data.c
@@ -1087,7 +1087,7 @@ INT32 R_ColormapNumForName(char *name)
 	extra_colormaps[num_extra_colormaps].fadecolor = 0x0;
 	extra_colormaps[num_extra_colormaps].maskamt = 0x0;
 	extra_colormaps[num_extra_colormaps].fadestart = 0;
-	extra_colormaps[num_extra_colormaps].fadeend = 33;
+	extra_colormaps[num_extra_colormaps].fadeend = 31;
 	extra_colormaps[num_extra_colormaps].fog = 0;
 
 	num_extra_colormaps++;
@@ -1115,7 +1115,7 @@ INT32 R_CreateColormap(char *p1, char *p2, char *p3)
 	size_t mapnum = num_extra_colormaps;
 	size_t i;
 	UINT32 cr, cg, cb, maskcolor, fadecolor;
-	UINT32 fadestart = 0, fadeend = 33, fadedist = 33;
+	UINT32 fadestart = 0, fadeend = 31, fadedist = 31;
 
 #define HEX2INT(x) (UINT32)(x >= '0' && x <= '9' ? x - '0' : x >= 'a' && x <= 'f' ? x - 'a' + 10 : x >= 'A' && x <= 'F' ? x - 'A' + 10 : 0)
 	if (p1[0] == '#')
@@ -1156,12 +1156,12 @@ INT32 R_CreateColormap(char *p1, char *p2, char *p3)
 		// Get parameters like fadestart, fadeend, and the fogflag
 		fadestart = NUMFROMCHAR(p2[3]) + (NUMFROMCHAR(p2[2]) * 10);
 		fadeend = NUMFROMCHAR(p2[5]) + (NUMFROMCHAR(p2[4]) * 10);
-		if (fadestart > 32)
+		if (fadestart > 30)
 			fadestart = 0;
-		if (fadeend > 33 || fadeend < 1)
-			fadeend = 33;
+		if (fadeend > 31 || fadeend < 1)
+			fadeend = 31;
 		fadedist = fadeend - fadestart;
-		fog = NUMFROMCHAR(p2[1]) ? 1 : 0;
+		fog = NUMFROMCHAR(p2[1]);
 	}
 #undef getnum
 
@@ -1262,7 +1262,7 @@ void R_CreateColormap2(char *p1, char *p2, char *p3)
 	size_t i;
 	char *colormap_p;
 	UINT32 cr, cg, cb, maskcolor, fadecolor;
-	UINT32 fadestart = 0, fadeend = 33, fadedist = 33;
+	UINT32 fadestart = 0, fadeend = 31, fadedist = 31;
 
 #define HEX2INT(x) (UINT32)(x >= '0' && x <= '9' ? x - '0' : x >= 'a' && x <= 'f' ? x - 'a' + 10 : x >= 'A' && x <= 'F' ? x - 'A' + 10 : 0)
 	if (p1[0] == '#')
@@ -1303,12 +1303,12 @@ void R_CreateColormap2(char *p1, char *p2, char *p3)
 		// Get parameters like fadestart, fadeend, and the fogflag
 		fadestart = NUMFROMCHAR(p2[3]) + (NUMFROMCHAR(p2[2]) * 10);
 		fadeend = NUMFROMCHAR(p2[5]) + (NUMFROMCHAR(p2[4]) * 10);
-		if (fadestart > 32)
+		if (fadestart > 30)
 			fadestart = 0;
-		if (fadeend > 33 || fadeend < 1)
-			fadeend = 33;
+		if (fadeend > 31 || fadeend < 1)
+			fadeend = 31;
 		fadedist = fadeend - fadestart;
-		fog = NUMFROMCHAR(p2[1]) ? 1 : 0;
+		fog = NUMFROMCHAR(p2[1]);
 	}
 #undef getnum
 
diff --git a/src/r_plane.c b/src/r_plane.c
index b7b9eaff3..734493ebb 100644
--- a/src/r_plane.c
+++ b/src/r_plane.c
@@ -768,7 +768,7 @@ void R_DrawSinglePlane(visplane_t *pl)
 		else // Opaque, but allow transparent flat pixels
 			spanfunc = splatfunc;
 
-		if (pl->extra_colormap && pl->extra_colormap->fog)
+		if (!pl->extra_colormap || !(pl->extra_colormap->fog & 2))
 			light = (pl->lightlevel >> LIGHTSEGSHIFT);
 		else
 			light = LIGHTLEVELS-1;
@@ -822,7 +822,7 @@ void R_DrawSinglePlane(visplane_t *pl)
 			else // Opaque, but allow transparent flat pixels
 				spanfunc = splatfunc;
 
-			if (pl->extra_colormap && pl->extra_colormap->fog)
+			if (!pl->extra_colormap || !(pl->extra_colormap->fog & 2))
 				light = (pl->lightlevel >> LIGHTSEGSHIFT);
 			else
 				light = LIGHTLEVELS-1;
diff --git a/src/r_things.c b/src/r_things.c
index 331febabd..0b1764167 100644
--- a/src/r_things.c
+++ b/src/r_things.c
@@ -1023,7 +1023,7 @@ static void R_SplitSprite(vissprite_t *sprite, mobj_t *thing)
 			else
 */
 			if (!((thing->frame & (FF_FULLBRIGHT|FF_TRANSMASK) || thing->flags2 & MF2_SHADOW)
-				&& (!newsprite->extra_colormap || !newsprite->extra_colormap->fog)))
+				&& (!newsprite->extra_colormap || !(newsprite->extra_colormap->fog & 1))))
 			{
 				lindex = FixedMul(sprite->xscale, FixedDiv(640, vid.width))>>(LIGHTSCALESHIFT);
 
@@ -1324,7 +1324,7 @@ static void R_ProjectSprite(mobj_t *thing)
 		vis->transmap = transtables + (thing->frame & FF_TRANSMASK) - 0x10000;
 
 	if (((thing->frame & FF_FULLBRIGHT) || (thing->flags2 & MF2_SHADOW))
-		&& (!vis->extra_colormap || !vis->extra_colormap->fog))
+		&& (!vis->extra_colormap || !(vis->extra_colormap->fog & 1)))
 	{
 		// full bright: goggles
 		vis->colormap = colormaps;