diff --git a/gralloc/color_extensions.h b/gralloc/color_extensions.h
new file mode 100644
index 0000000..f670162
--- /dev/null
+++ b/gralloc/color_extensions.h
@@ -0,0 +1,18 @@
+/*
+* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+* SPDX-License-Identifier: BSD-3-Clause-Clear
+*/
+#include <cstdint>
+
+#ifndef __COLOREXTENSIONS_H__
+#define __COLOREXTENSIONS_H__
+
+#define CUSTOM_METADATA_SIZE_BYTES 1024*42
+typedef struct CustomContentMetadata {
+  uint64_t size;
+  uint8_t metadataPayload[CUSTOM_METADATA_SIZE_BYTES];
+} CustomContentMetadata;
+
+
+#endif  // __COLOREXTENSIONS_H__
+