add button color example to readme

README.md

@@ -380,12 +380,13 @@ The following properties are available.
 -   `state`: boolean
 -   `stateonly`: boolean
 -   `trigger`: boolean
+-   `color`: int, from 0 to 8
 
 example:
 
 ```python
 vm.button[37].state = True
-vm.button[55].trigger = False
+vm.button[4].color = 1
 ```
 
 ### Recorder

voicemeeterlib/device.py

@@ -23,6 +23,7 @@ class Adapter(IRemote):
     def output(self):
         pass
 
+    @property
     def identifier(self):
         pass
 

voicemeeterlib/iremote.py

@@ -33,6 +33,7 @@ class IRemote(metaclass=ABCMeta):
             cmd += (f".{param}",)
         return "".join(cmd)
 
+    @property
     @abstractmethod
     def identifier(self):
         pass

voicemeeterlib/macrobutton.py

@@ -12,9 +12,6 @@ ButtonModes = IntEnum(
 class Adapter(IRemote):
     """Adapter to the common interface."""
 
-    def identifier(self):
-        pass
-
     def getter(self, mode):
         self.logger.debug(f"getter: button[{self.index}].{ButtonModes(mode).name}")
         return self._remote.get_buttonstatus(self.index, mode)
@@ -26,7 +23,21 @@ class Adapter(IRemote):
         self._remote.set_buttonstatus(self.index, val, mode)
 
 
-class MacroButton(Adapter):
+class MacroButtonColorMixin(IRemote):
+    @property
+    def identifier(self):
+        return f"command.button[{self.index}]"
+
+    @property
+    def color(self) -> int:
+        return int(IRemote.getter(self, "color"))
+
+    @color.setter
+    def color(self, val: int):
+        IRemote.setter(self, "color", val)
+
+
+class MacroButton(Adapter, MacroButtonColorMixin):
     """Defines concrete implementation for macrobutton"""
 
     def __str__(self):