diff --git a/package.json b/package.json
index 2b7ae82..413ffc7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "my-weekly-todo-list",
-  "version": "1.99.0",
+  "version": "1.99.1",
   "description": "A web-based weekly task management application that organizes to-dos and calendar events in a single, intuitive weekly view",
   "main": "index.js",
   "scripts": {
diff --git a/src/components/WeeklyView.tsx b/src/components/WeeklyView.tsx
index a754a35..a279c08 100644
--- a/src/components/WeeklyView.tsx
+++ b/src/components/WeeklyView.tsx
@@ -7952,7 +7952,11 @@ export default function WeeklyView() {
                                                     display: "flex",
                                                     flexDirection: "column",
                                                     position: "relative",
-                                                    ...(list.color ? { borderLeft: `4px solid ${list.color}`, paddingLeft: "8px" } : {}),
+                                                    ...(list.color ? {
+                                                        background: `${list.color}1f`,
+                                                        borderLeft: `4px solid ${list.color}`,
+                                                        borderRadius: "6px",
+                                                    } : {}),
                                                 }}
                                                 onMouseDown={(e) => {
                                                     const target = e.target as HTMLElement;