diff --git a/TODO.md b/TODO.md
index 504aef0..4561901 100644
--- a/TODO.md
+++ b/TODO.md
@@ -12,6 +12,23 @@ Add selectable reading profiles for punctuation and paragraph pause lengths,
 long-word delay, unfamiliar-word timing, and WPM presets. Keep a plain/default
 profile that preserves the current cadence.
 
+## Dialogue and character colors
+
+Add optional color rendering for dialogue and character names. The converter
+should detect conventional quotation marks and styled thought/dialogue spans,
+then attribute only high-confidence spans to a canonical entity. Store the
+entity identity, never a color, in a compact v3 RSVP sidecar; load a separate,
+editable per-book entity map that assigns each entity a hue from 30 through 330
+in 30-degree HSL steps at 100% saturation and 75% lightness. Include aliases
+so descriptions such as "mysterious man" can later resolve to a named entity,
+and report unresolved or ambiguous attribution for review rather than guessing.
+
+Keep the sidecar sparse: unassigned words must have no sidecar record at all,
+not a record with an entity ID of zero or another null sentinel. Extend a
+record only when it already exists for style/timing metadata or when an entity
+assignment requires one. Add a persisted reader setting to toggle coloring
+without requiring reconversion.
+
 ## Converter preflight and safe section splitting
 
 Add a `--check` mode that reports section word counts, section and sidecar