Change Colour.blurple to new one

This moves the old one to Colour.og_blurple.

discord/colour.py

@@ -270,10 +270,15 @@ class Colour:
     darker_gray = darker_grey
 
     @classmethod
-    def blurple(cls: Type[CT]) -> CT:
+    def og_blurple(cls: Type[CT]) -> CT:
         """A factory method that returns a :class:`Colour` with a value of ``0x7289da``."""
         return cls(0x7289da)
 
+    @classmethod
+    def blurple(cls: Type[CT]) -> CT:
+        """A factory method that returns a :class:`Colour` with a value of ``0x5865F2``."""
+        return cls(0x5865F2)
+
     @classmethod
     def greyple(cls: Type[CT]) -> CT:
         """A factory method that returns a :class:`Colour` with a value of ``0x99aab5``."""