diff --git a/backend/migrations/20260310120000_update_time_labels.sql b/backend/migrations/20260310120000_update_time_labels.sql
new file mode 100644
index 0000000..ce7bc0f
--- /dev/null
+++ b/backend/migrations/20260310120000_update_time_labels.sql
@@ -0,0 +1,4 @@
+ALTER TABLE time_labels RENAME COLUMN timestamp TO start_timestamp;
+ALTER TABLE time_labels ADD COLUMN end_timestamp TIMESTAMPTZ;
+ALTER TABLE time_labels ADD COLUMN color TEXT NOT NULL DEFAULT '';
+ALTER TABLE time_labels ALTER COLUMN color DROP DEFAULT;
diff --git a/backend/shared-logic/src/db.rs b/backend/shared-logic/src/db.rs
index 285ecf8..b90ae15 100644
--- a/backend/shared-logic/src/db.rs
+++ b/backend/shared-logic/src/db.rs
@@ -372,13 +372,15 @@ pub async fn insert_time_labels(client: &DbClient, session_id: i32, labels: Vec<
     }
 
     let mut query_builder = sqlx::QueryBuilder::new(
-        "INSERT INTO time_labels (session_id, timestamp, label) "
+        "INSERT INTO time_labels (session_id, start_timestamp, end_timestamp, label, color) "
     );
 
     query_builder.push_values(labels.iter(), |mut b, label| {
         b.push_bind(session_id)
-            .push_bind(label.timestamp)
-            .push_bind(&label.label);
+            .push_bind(label.start_timestamp)
+            .push_bind(label.end_timestamp)
+            .push_bind(&label.label)
+            .push_bind(&label.color);
     });
 
     query_builder.build().execute(&**client).await?;
@@ -416,7 +418,7 @@ pub async fn get_time_labels_by_range(client: &DbClient, session_id: i32, start:
 
     let labels = sqlx::query_as!(
         TimeLabel,
-        "SELECT id, session_id, timestamp, label FROM time_labels WHERE session_id = $1 AND timestamp >= $2 AND timestamp <= $3 ORDER BY timestamp",
+        "SELECT id, session_id, start_timestamp, end_timestamp, label, color FROM time_labels WHERE session_id = $1 AND start_timestamp >= $2 AND start_timestamp <= $3 ORDER BY start_timestamp",
         session_id,
         start,
         end,
diff --git a/backend/shared-logic/src/models.rs b/backend/shared-logic/src/models.rs
index 92c51b5..b91c289 100644
--- a/backend/shared-logic/src/models.rs
+++ b/backend/shared-logic/src/models.rs
@@ -54,16 +54,20 @@ pub struct FrontendState {
 pub struct TimeLabel {
     pub id: i32,
     pub session_id: i32,
-    pub timestamp: DateTime<Utc>,
+    pub start_timestamp: DateTime<Utc>,
+    pub end_timestamp: Option<DateTime<Utc>>,
     pub label: String,
+    pub color: String,
 }
 
 // Struct for a time label coming INTO the API from the frontend
 // No id (auto-generated) or session_id (comes from URL path)
 #[derive(Debug, Serialize, Deserialize)]
 pub struct NewTimeLabel {
-    pub timestamp: DateTime<Utc>,
+    pub start_timestamp: DateTime<Utc>,
+    pub end_timestamp: Option<DateTime<Utc>>,
     pub label: String,
+    pub color: String,
 }
 
 // Struct for a row of EEG data coming OUT of the DB