Update film_simulation.py

film_simulation.py

@@ -189,7 +189,8 @@ def apply_film_profile(img, profile, chroma_override=None, blur_override=None, c
     
     img_saturated = apply_base_color(img_saturated, profile.base_color)
     img_saturated = add_film_grain(img_saturated, amount=profile.grain_amount, size=profile.grain_size)
-    img_saturated = adjust_color_temperature(img_saturated, color_temp)
+    if color_temp is not None:
+        img_saturated = adjust_color_temperature(img_saturated, color_temp)
     
     if cross_process_flag:
         img_saturated = cross_process(img_saturated)