Fix typehinting in colours.py

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "makegraph"
-version = "0.2.1"
+version = "0.2.2"
 description = "A custom python Matplotlib wrapper"
 readme = "README.md"
 authors = [

src/makegraph/__init__.py

@@ -2,7 +2,7 @@ from .colours import ColourValue, ColourContainer
 from .uq_colours import UQ_COLOURS_DICT, UQ_COLOURS, add_colours_to_mpl
 from .makegraph import makeGraph, pltKeyClose
 
-__version__ = "0.2.1"
+__version__ = "0.2.2"
 
 __all__ = [
     "makeGraph", "pltKeyClose",

src/makegraph/colours.py

@@ -1,7 +1,7 @@
 # Better Colour Class for matplotlib
 
 __author__ = "Cal Wing"
-__version__ = "0.0.1"
+__version__ = "0.0.2"
 
 from cycler import cycler, Cycler
 from typing import Sequence, ItemsView, KeysView
@@ -41,7 +41,7 @@ class ColourValue(str):
             f"({self.rgba[0]:.2f}, {self.rgba[1]:.2f}, " \
             f"{self.rgba[2]:.2f}, {self.rgba[3]:.2f})>"
     
-    def alpha_adj(self, alpha):
+    def alpha_adj(self, alpha) -> tuple[float, float, float, float]:
         r, g, b, _ = self.rgba
         return (r, g, b, alpha)