diff --git a/src/core/theme.rs b/src/core/theme.rs
index 5a625eb..924fc64 100644
--- a/src/core/theme.rs
+++ b/src/core/theme.rs
@@ -19,6 +19,7 @@ pub(super) fn plugin(app: &mut App) {
         ThemeColorFor<UiImage>,
         ThemeColorFor<BackgroundColor>,
         ThemeColorFor<BorderColor>,
+        ThemeColorFor<Outline>,
         ThemeColorForText,
     )>();
 }
@@ -160,3 +161,9 @@ impl ColorMut for BorderColor {
         &mut self.0
     }
 }
+
+impl ColorMut for Outline {
+    fn color_mut(&mut self) -> &mut Color {
+        &mut self.color
+    }
+}
diff --git a/src/game/card.rs b/src/game/card.rs
index 6e8d1b0..a601cf2 100644
--- a/src/game/card.rs
+++ b/src/game/card.rs
@@ -124,6 +124,11 @@ impl EntityCommand for CardBackground {
                 image: UiImage::new(self.texture),
                 ..default()
             },
+            Outline {
+                width: Vw(0.4),
+                ..default()
+            },
+            ThemeColor::CardBorder.target::<Outline>(),
             atlas,
         ));