diff --git a/tame/app.py b/tame/app.py
index 4f3490c..e633675 100644
--- a/tame/app.py
+++ b/tame/app.py
@@ -629,6 +629,14 @@ def action_toggle_theme(self) -> None:
                 widget.styles.color = wfg
             except Exception:
                 pass
+        # Sidebar is queried by type (no fixed ID)
+        sbg, sfg = colors["sidebar"]
+        try:
+            sidebar = self.query_one(SessionSidebar)
+            sidebar.styles.background = sbg
+            sidebar.styles.color = sfg
+        except Exception:
+            pass
         log.info("Switched theme to '%s'", new_theme)
 
     def action_delete_session(self) -> None:
diff --git a/tame/ui/themes/manager.py b/tame/ui/themes/manager.py
index 7348ebc..44c4cbf 100644
--- a/tame/ui/themes/manager.py
+++ b/tame/ui/themes/manager.py
@@ -24,48 +24,56 @@
     "dark": {
         "screen": ("#1e1e1e", "#d4d4d4"),
         "header": ("#007acc", "#ffffff"),
+        "sidebar": ("#252526", "#d4d4d4"),
         "viewer": ("#1e1e1e", "#d4d4d4"),
         "status": ("#007acc", "#ffffff"),
     },
     "light": {
         "screen": ("#ffffff", "#333333"),
         "header": ("#007acc", "#ffffff"),
+        "sidebar": ("#f3f3f3", "#333333"),
         "viewer": ("#ffffff", "#333333"),
         "status": ("#007acc", "#ffffff"),
     },
     "dracula": {
         "screen": ("#282a36", "#f8f8f2"),
         "header": ("#6272a4", "#f8f8f2"),
+        "sidebar": ("#21222c", "#f8f8f2"),
         "viewer": ("#282a36", "#f8f8f2"),
         "status": ("#bd93f9", "#282a36"),
     },
     "nord": {
         "screen": ("#2e3440", "#d8dee9"),
         "header": ("#5e81ac", "#eceff4"),
+        "sidebar": ("#3b4252", "#d8dee9"),
         "viewer": ("#2e3440", "#d8dee9"),
         "status": ("#5e81ac", "#eceff4"),
     },
     "monokai": {
         "screen": ("#272822", "#f8f8f2"),
         "header": ("#75715e", "#f8f8f2"),
+        "sidebar": ("#1e1f1c", "#f8f8f2"),
         "viewer": ("#272822", "#f8f8f2"),
         "status": ("#66d9ef", "#272822"),
     },
     "gruvbox": {
         "screen": ("#282828", "#ebdbb2"),
         "header": ("#458588", "#ebdbb2"),
+        "sidebar": ("#1d2021", "#ebdbb2"),
         "viewer": ("#282828", "#ebdbb2"),
         "status": ("#458588", "#ebdbb2"),
     },
     "solarized_dark": {
         "screen": ("#002b36", "#839496"),
         "header": ("#268bd2", "#fdf6e3"),
+        "sidebar": ("#073642", "#839496"),
         "viewer": ("#002b36", "#839496"),
         "status": ("#268bd2", "#fdf6e3"),
     },
     "solarized_light": {
         "screen": ("#fdf6e3", "#657b83"),
         "header": ("#268bd2", "#fdf6e3"),
+        "sidebar": ("#eee8d5", "#657b83"),
         "viewer": ("#fdf6e3", "#657b83"),
         "status": ("#268bd2", "#fdf6e3"),
     },