diff --git a/main.js b/main.js
index 1a21ee8..8e5a53a 100644
--- a/main.js
+++ b/main.js
@@ -1,13 +1,58 @@
+const themes = {
+    default: {
+        backgroundColor: [
+            'rgba(54, 162, 235, 0.2)',
+            'rgba(255, 206, 86, 0.2)'
+        ],
+        borderColor: [
+            'rgba(54, 162, 235, 1)',
+            'rgba(255, 206, 86, 1)'
+        ]
+    },
+    dark: {
+        backgroundColor: [
+            'rgba(54, 54, 54, 0.2)',
+            'rgba(77, 77, 77, 0.2)'
+        ],
+        borderColor: [
+            'rgba(54, 54, 54, 1)',
+            'rgba(77, 77, 77, 1)'
+        ]
+    },
+    light: {
+        backgroundColor: [
+            'rgba(200, 200, 200, 0.2)',
+            'rgba(220, 220, 220, 0.2)'
+        ],
+        borderColor: [
+            'rgba(200, 200, 200, 1)',
+            'rgba(220, 220, 220, 1)'
+        ]
+    },
+    colorful: {
+        backgroundColor: [
+            'rgba(255, 99, 132, 0.2)',
+            'rgba(75, 192, 192, 0.2)'
+        ],
+        borderColor: [
+            'rgba(255, 99, 132, 1)',
+            'rgba(75, 192, 192, 1)'
+        ]
+    }
+};
+
 document.getElementById('repoForm').addEventListener('submit', function(event) {
     event.preventDefault();
     const username = document.getElementById('username').value;
     const repository = document.getElementById('repository').value;
+    const theme = document.getElementById('theme').value;
 
     fetch(`https://api.github.com/repos/${username}/${repository}`)
         .then(response => response.json())
         .then(data => {
             const forks = data.forks_count;
             const stars = data.stargazers_count;
+            const themeColors = themes[theme];
 
             const ctx = document.getElementById('forksStarsChart').getContext('2d');
             if (window.forksStarsChart instanceof Chart) {
@@ -20,19 +65,14 @@ document.getElementById('repoForm').addEventListener('submit', function(event) {
                     datasets: [{
                         label: 'Count',
                         data: [forks, stars],
-                        backgroundColor: [
-                            'rgba(54, 162, 235, 0.2)',
-                            'rgba(255, 206, 86, 0.2)'
-                        ],
-                        borderColor: [
-                            'rgba(54, 162, 235, 1)',
-                            'rgba(255, 206, 86, 1)'
-                        ],
+                        backgroundColor: themeColors.backgroundColor,
+                        borderColor: themeColors.borderColor,
                         borderWidth: 1
                     }]
                 },
                 options: {
                     responsive: true,
+                    maintainAspectRatio: false,
                     scales: {
                         y: {
                             beginAtZero: true,
@@ -44,7 +84,7 @@ document.getElementById('repoForm').addEventListener('submit', function(event) {
                         x: {
                             title: {
                                 display: true,
-                                text: 'Metric'
+                                text: repository
                             }
                         }
                     }
@@ -61,4 +101,4 @@ document.getElementById('downloadButton').addEventListener('click', function() {
     link.href = window.forksStarsChart.toBase64Image();
     link.download = 'forks-stars-chart.png';
     link.click();
-});
\ No newline at end of file
+});