Change yellow color to dark green

Replaced the yellow color with dark green to improve text visibility.

src/pages/Analytics.tsx

@@ -9,7 +9,7 @@ import { ChevronLeft, ChevronRight } from 'lucide-react';
 const Analytics = () => {
   const [selectedPeriod, setSelectedPeriod] = useState('이번 달');
 
-  // Updated expense categories with new green and yellow color scheme
+  // Updated expense categories with green color scheme
   const expenseData = [{
     name: '식비',
     value: 350000,
@@ -21,7 +21,7 @@ const Analytics = () => {
   }, {
     name: '교통비',
     value: 175000,
-    color: '#FFF176' // Soft yellow
+    color: '#2E7D32' // Dark green (replacing yellow)
   }];
 
   // Sample data for the monthly comparison - renamed income to budget