diff --git a/src/scripting/thingdef.h b/src/scripting/thingdef.h
index 4acd0e90586..c5ac2432dca 100644
--- a/src/scripting/thingdef.h
+++ b/src/scripting/thingdef.h
@@ -324,7 +324,7 @@ int MatchString (const char *in, const char **strings);
 #define PROP_DOUBLE_PARM(var, no) \
 	double var = params[(no)+1].d;
 
-#define PROP_COLOR_PARM(var, no) \
-	int var = params[(no)+1].i== 0? params[(no)+2].i : V_GetColor(NULL, params[(no)+2].s);
+#define PROP_COLOR_PARM(var, no, scriptpos) \
+	int var = params[(no)+1].i== 0? params[(no)+2].i : V_GetColor(NULL, params[(no)+2].s, scriptpos);
 
 #endif
diff --git a/src/scripting/thingdef_properties.cpp b/src/scripting/thingdef_properties.cpp
index 633e43bdb2a..6047344dc0c 100644
--- a/src/scripting/thingdef_properties.cpp
+++ b/src/scripting/thingdef_properties.cpp
@@ -766,7 +766,7 @@ DEFINE_PROPERTY(translation, L, Actor)
 //==========================================================================
 DEFINE_PROPERTY(stencilcolor, C, Actor)
 {
-	PROP_COLOR_PARM(color, 0);
+	PROP_COLOR_PARM(color, 0, &bag.ScriptPosition);
 
 	defaults->fillcolor = color | (ColorMatcher.Pick (RPART(color), GPART(color), BPART(color)) << 24);
 }
@@ -776,7 +776,7 @@ DEFINE_PROPERTY(stencilcolor, C, Actor)
 //==========================================================================
 DEFINE_PROPERTY(bloodcolor, C, Actor)
 {
-	PROP_COLOR_PARM(color, 0);
+	PROP_COLOR_PARM(color, 0, &bag.ScriptPosition);
 
 	defaults->BloodColor = color;
 	defaults->BloodColor.a = 255;	// a should not be 0.
@@ -1608,7 +1608,7 @@ DEFINE_CLASS_PROPERTY_PREFIX(player, crouchsprite, S, PlayerPawn)
 //==========================================================================
 DEFINE_CLASS_PROPERTY_PREFIX(player, damagescreencolor, Cfs, PlayerPawn)
 {
-	PROP_COLOR_PARM(c, 0);
+	PROP_COLOR_PARM(c, 0, &bag.ScriptPosition);
 
 	PalEntry color = c;