diff --git a/SaneTsv/readme.md b/SaneTsv/readme.md
index 31fae69..3ca6739 100644
--- a/SaneTsv/readme.md
+++ b/SaneTsv/readme.md
@@ -97,5 +97,11 @@ Extended formats may still use the .ctsv extension, though they could use a dedi
 
 - Physical units
 - Multiformats
+  - Instead of multihashes, maybe have a column type for each hash type. That way we can avoid wasting data on the type within each field.
 - ISO 8601
-- https://github.com/multiformats/unsigned-varint
\ No newline at end of file
+- https://github.com/multiformats/unsigned-varint
+- Color codes (e.g. #E359FF)
+  - Both binary and string-based
+- JSON
+- XML
+- URL