diff --git a/apps/maple-agent/app/src/ui/chat/composer.rs b/apps/maple-agent/app/src/ui/chat/composer.rs
index 966654cfb..b7d419c44 100644
--- a/apps/maple-agent/app/src/ui/chat/composer.rs
+++ b/apps/maple-agent/app/src/ui/chat/composer.rs
@@ -116,7 +116,7 @@ impl ChatScreen {
                 .flex_none()
                 .pl(inset)
                 .pr_3()
-                .bg(gpui::rgb(theme::bg_sidebar())),
+                .bg(gpui::rgb(theme::bg_app())),
         )
         .child(
             div()
diff --git a/apps/maple-agent/app/src/ui/chat/mod.rs b/apps/maple-agent/app/src/ui/chat/mod.rs
index a7988846b..07865b6e8 100644
--- a/apps/maple-agent/app/src/ui/chat/mod.rs
+++ b/apps/maple-agent/app/src/ui/chat/mod.rs
@@ -135,7 +135,7 @@ impl SidebarTransition {
     }
 }
 /// Height of the task header and the clear strip above the collapsed rail.
-const CHAT_HEADER_HEIGHT: gpui::Pixels = px(40.);
+const CHAT_HEADER_HEIGHT: gpui::Pixels = px(36.);
 /// Left inset for the header beside the rail: the traffic lights reach
 /// 30 px past it, followed by an 8 px gap when the bar is transparent.
 const SIDEBAR_COLLAPSED_INSET: gpui::Pixels = if titlebar::TRANSPARENT_TITLEBAR {
@@ -6791,7 +6791,7 @@ impl Render for ChatScreen {
                             .flex_1()
                             .h_full()
                             .min_w_0()
-                            .bg(gpui::rgb(theme::bg_sidebar()))
+                            .bg(gpui::rgb(theme::bg_app()))
                             .child(
                                 // The header is the window's title bar; a wheel
                                 // over it scrolls nothing.
@@ -6804,7 +6804,6 @@ impl Render for ChatScreen {
                                     .flex_col()
                                     .flex_1()
                                     .min_h_0()
-                                    .rounded_tl(theme::RADIUS_LG)
                                     .bg(gpui::rgb(theme::bg_app()))
                                     .child(main),
                             ),