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diff --git a/examples/rainbow.py b/examples/rainbow.py
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+"""
+
+This example demonstrates how to write a custom highlighter.
+
+"""
+
+from random import randint
+
+from rich import print
+from rich.highlighter import Highlighter
+
+
+class RainbowHighlighter(Highlighter):
+    def highlight(self, text):
+        for index in range(len(text)):
+            text.stylize(f"color({randint(16, 255)})", index, index + 1)
+
+
+rainbow = RainbowHighlighter()
+print(rainbow("I must not fear. Fear is the mind-killer."))