Add colour.py with string based colour value

colour.py

@@ -0,0 +1,63 @@
+from functools import lru_cache
+import matplotlib.colors as colors
+
+import numpy as np
+
+class ColourValue(str):
+    def __new__(cls, value, /, name=None) -> "ColourValue":
+        hex_val = colors.to_hex(value, True)
+        instance = super().__new__(cls, hex_val)
+        
+        instance._name = name
+
+        return instance
+           
+    def __repr__(self) -> str:
+        if self.name:
+            name = f"\"{self.name}\" "
+        else:
+            name = ""
+        
+        return f"<{self.__class__.__name__}" \
+            f" {name}{self} " \
+            f"({self.rgba[0]:.2f}, {self.rgba[1]:.2f}, " \
+            f"{self.rgba[2]:.2f}, {self.rgba[3]:.2f})>"
+    
+    def alpha_adj(self, alpha):
+        r, g, b, a = self.rgba
+        return (r, g, b, alpha)
+
+    @property
+    @lru_cache
+    def rgba(self) -> tuple[float, float, float, float]:
+        return colors.to_rgba(self)
+
+    @property
+    @lru_cache
+    def rgb(self) -> tuple[float, float, float]:
+        return colors.to_rgb(self)
+    
+    @property
+    @lru_cache
+    def hsv(self) -> np.ndarray:
+        return colors.rgb_to_hsv(self.rgb)
+    
+    @property
+    @lru_cache
+    def name(self) -> str:
+        if hasattr(self, "_name") and self._name is not None:
+            name = self._name
+        else:
+            name = ""
+
+        return name  # ty:ignore[invalid-return-type]
+    
+    @property
+    def hex(self) -> str:
+        return self
+    
+if __name__ == "__main__":
+    foo = ColourValue((0,0.5,0.6), "Whoa a name!")
+    print(foo)
+
+    exit()