diff --git a/panda/src/particlesystem/colorInterpolationManager.I b/panda/src/particlesystem/colorInterpolationManager.I
index 3eb6973f2d..08af20318b 100755
--- a/panda/src/particlesystem/colorInterpolationManager.I
+++ b/panda/src/particlesystem/colorInterpolationManager.I
@@ -243,6 +243,17 @@ set_enabled(const bool enabled) {
   _enabled = enabled;
 }
 
+////////////////////////////////////////////////////////////////////
+//    Function : ColorInterpolationManager::set_default_color
+//      Access : public
+// Description : Sets the color to used if no segments are present
+////////////////////////////////////////////////////////////////////
+
+INLINE void ColorInterpolationManager::
+set_default_color(const Colorf &c) {
+  _default_color = c;
+}
+
 ////////////////////////////////////////////////////////////////////
 //    Function : ColorInterpolationManager::get_segment
 //      Access : public
diff --git a/panda/src/particlesystem/colorInterpolationManager.h b/panda/src/particlesystem/colorInterpolationManager.h
index d2bb603920..a824c2ee76 100755
--- a/panda/src/particlesystem/colorInterpolationManager.h
+++ b/panda/src/particlesystem/colorInterpolationManager.h
@@ -291,12 +291,8 @@ ColorInterpolationManager();
   int add_linear(const float time_begin = 0.0f, const float time_end = 1.0f, const Colorf color_a = Colorf(1.0f,0.0f,0.0f,1.0f), const Colorf color_b = Colorf(0.0f,1.0f,0.0f,1.0f));
   int add_stepwave(const float time_begin = 0.0f, const float time_end = 1.0f, const Colorf color_a = Colorf(1.0f,0.0f,0.0f,1.0f), const Colorf color_b = Colorf(0.0f,1.0f,0.0f,1.0f), const float width_a = 0.5f, const float width_b = 0.5f);
   int add_sinusoid(const float time_begin = 0.0f, const float time_end = 1.0f, const Colorf color_a = Colorf(1.0f,0.0f,0.0f,1.0f), const Colorf color_b = Colorf(0.0f,1.0f,0.0f,1.0f), const float period = 1.0f);
-  /*
-  static ColorInterpolationFunctionConstant* downcast_function_to_constant(ColorInterpolationFunction* f);
-  static ColorInterpolationFunctionLinear*   downcast_function_to_linear(ColorInterpolationFunction* f);
-  static ColorInterpolationFunctionStepwave* downcast_function_to_stepwave(ColorInterpolationFunction* f);
-  static ColorInterpolationFunctionSinusoid* downcast_function_to_sinusoid(ColorInterpolationFunction* f);
-  */
+
+  INLINE void set_default_color(const Colorf &c);
   INLINE ColorInterpolationSegment* get_segment(const int seg_id);
   INLINE string get_segment_id_list();
   void clear_segment(const int seg_id);