Typehint Colour.__init__ parameter

discord/colour.py

@@ -78,7 +78,7 @@ class Colour:
 
     __slots__ = ('value',)
 
-    def __init__(self, value):
+    def __init__(self, value: int):
         if not isinstance(value, int):
             raise TypeError(f'Expected int parameter, received {value.__class__.__name__} instead.')