Add ComfyUI ColorCode bridge node

README.md

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+# ComfyUI ColorCode Bridge
+
+Tiny type adapter for workflows where one node outputs a hex color string and another node requires a `COLORCODE` input.
+
+## Node
+
+- `utils/color > String To ColorCode`
+
+## Usage
+
+Connect an automatic hex-color string output such as `#00FF00` into `color_hex`, then connect `color_code` into the downstream `COLORCODE` input.
+
+This node validates and normalizes:
+
+- `00FF00` -> `#00FF00`
+- `#0F0` -> `#00FF00`
+- `#00ff00` -> `#00FF00`

__init__.py

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+import re
+
+
+HEX_RE = re.compile(r"^#?([0-9a-fA-F]{3}|[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$")
+
+
+class StringToColorCode:
+    @classmethod
+    def INPUT_TYPES(cls):
+        return {
+            "required": {
+                "color_hex": ("STRING", {"forceInput": True}),
+            }
+        }
+
+    RETURN_TYPES = ("COLORCODE",)
+    RETURN_NAMES = ("color_code",)
+    FUNCTION = "convert"
+    CATEGORY = "utils/color"
+
+    def convert(self, color_hex):
+        value = self._first_value(color_hex).strip()
+        match = HEX_RE.match(value)
+        if not match:
+            raise ValueError(
+                f"String To ColorCode expected a hex color like #00FF00, got: {value!r}"
+            )
+
+        hex_value = match.group(1)
+        if len(hex_value) == 3:
+            hex_value = "".join(ch * 2 for ch in hex_value)
+
+        return (f"#{hex_value.upper()}",)
+
+    @staticmethod
+    def _first_value(value):
+        if isinstance(value, (list, tuple)):
+            value = value[0] if value else ""
+        return str(value)
+
+
+NODE_CLASS_MAPPINGS = {
+    "StringToColorCode": StringToColorCode,
+}
+
+NODE_DISPLAY_NAME_MAPPINGS = {
+    "StringToColorCode": "String To ColorCode",
+}