Make color hashable, use cache for label images

supervision/detection/line_zone.py

@@ -1,3 +1,4 @@
+from functools import lru_cache
 import math
 import warnings
 from typing import Any, Dict, Iterable, Tuple
@@ -452,6 +453,7 @@ class LineZoneAnnotator:
         return frame
 
     @staticmethod
+    @lru_cache(maxsize=32)
     def _make_count_label_image(
         text: str,
         *,

supervision/draw/color.py

@@ -254,6 +254,12 @@ class Color:
     @classproperty
     def ROBOFLOW(cls) -> Color:
         return Color.from_hex("#A351FB")
+    
+    def __hash__(self):
+        return hash((self.r, self.g, self.b))
+    
+    def __eq__(self, other):
+        return isinstance(other, Color) and self.r == other.r and self.g == other.g and self.b == other.b
 
 
 @dataclass