[widgets][toolchaineditor] add schema_version on loop/patch channel_colors

beat/editor/widgets/toolchaineditor.py

@@ -1535,8 +1535,6 @@ class Toolchain(QWidget):
             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(
                 BlockType.LOOPS.name, self.block_config, self.connection_config
             )
@@ -1626,7 +1624,8 @@ class Toolchain(QWidget):
         new_block_name = init_name + "_" + str(init_name_count)
         block_item["name"] = new_block_name
 
-        self.web_representation["channel_colors"][new_block_name] = "#000000"
+        if block_type == BlockType.DATASETS.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)
@@ -1738,6 +1737,8 @@ class Toolchain(QWidget):
         if self.web_representation is not None:
             data["representation"] = self.web_representation
 
+        has_loops = False
+
         for block_type in BlockType:
             block_type_list = []
             for block in self.blocks:
@@ -1751,6 +1752,7 @@ class Toolchain(QWidget):
                         block_data["evaluator_inputs"] = block.evaluator_inputs
                         block_data["processor_outputs"] = block.processor_outputs
                         block_data["evaluator_outputs"] = block.evaluator_outputs
+                        has_loops = True
                     else:
                         if block.inputs is not None:
                             block_data["inputs"] = block.inputs
@@ -1780,6 +1782,9 @@ class Toolchain(QWidget):
 
         data["connections"] = connection_list
 
+        if has_loops:
+            data["schema_version"] = 2
+
         return data