Give the Joke Shop a dark stucco wall and a photo-anchored concept

tools/scene_concepts.py

@@ -231,6 +231,7 @@ PICKS = {
     "brick_facade": "brick_facade",
     "stone_steps": "stone_steps-v2",
     "limestone_ashlar": "limestone_ashlar",
+    "dark_stucco": "dark_stucco",
     "sidewalk_pavers": "sidewalk_pavers",
     "asphalt": "asphalt",
     "asphalt_wet": "asphalt_wet",