diff --git a/robot/game_config/markers.py b/robot/game_config/markers.py
index 41c5884..0aa5655 100644
--- a/robot/game_config/markers.py
+++ b/robot/game_config/markers.py
@@ -55,7 +55,7 @@ def __repr__(self) -> str:
     def bounding_box_color(self) -> tuple:
         if self.type == MARKER_TYPE.ARENA: # If it is a wall
             return tuple(reversed((225, 249, 125))) # Turquoise
-        elif self.type == MARKER_TYPE.ARENA_OBJECT: # Other arena object (e.g. pillar)
+        elif self.type == MARKER_TYPE.TREE: # Other arena object (e.g. pillar)
             return tuple(reversed((255, 131, 125))) # Purple
         elif self.owning_team == TEAM.ARENA: # If it is a supply
             m = self if isinstance(self, TARGET_MARKER) else None
diff --git a/robot/wrapper.py b/robot/wrapper.py
index 065709d..c51e3d6 100644
--- a/robot/wrapper.py
+++ b/robot/wrapper.py
@@ -83,6 +83,7 @@ def __init__(self,
         self._hopper_client.open_pipe(self._start_pipe, delete=True, create=True, blocking=True)   # Make sure to use blocking mode, otherwise start button code fails
 
         self._log_pipe = PipeName((PipeType.INPUT, "log", "robot"), "/home/pi/pipes")
+        self._json_reader = JsonReader(self._hopper_client, self._start_pipe)
 
         # Close stdout and stderr
         os.close(1)
@@ -283,9 +284,7 @@ def _get_start_info(self):
         """Get the start infomation from the named pipe"""
 
         # This call blocks until the start info is read
-        d = self._hopper_client.read(self._start_pipe).decode("utf-8")
-
-        settings = json.loads(d)
+        settings = self._json_reader.read()
 
         assert "zone" in settings, "zone must be in startup info"
         if settings["zone"] not in range(4):