[widgets][toolchaineditor] append new color connection for new dataset connection

beat/editor/widgets/toolchaineditor.py

@@ -160,6 +160,10 @@ class BasePin(QGraphicsObject):
                         "channel"
                     ] = start.block_object.synchronized_channel
 
+                if end.block_object.synchronized_channel is None:
+                    end.block_object.synchronized_channel = connection_settings[
+                        "channel"
+                    ]
                 # Create the connection
                 connection_settings["from"] = start.block + "." + start.pin
                 connection_settings["to"] = end.block + "." + end.pin
@@ -999,11 +1003,16 @@ class Toolchain(QWidget):
         for block in self.blocks:
             if block.name.find(init_name) > -1:
                 init_name_count += 1
-        block_item["name"] = init_name + "_" + str(init_name_count)
+        new_block_name = init_name + "_" + str(init_name_count)
+        block_item["name"] = new_block_name
+
+        self.web_representation["channel_colors"][new_block_name] = "#000000"
 
         block = Block(block_type, self.block_config, self.connection_config)
         block.load(self, block_item)
+
         block.dataChanged.connect(self.dataChanged)
+        block.dataChanged.emit()
         self.blocks.append(block)
         self.scene.addItem(block)