diff --git a/static/css/main.css b/static/css/main.css
index d620292..311f39a 100644
--- a/static/css/main.css
+++ b/static/css/main.css
@@ -128,4 +128,35 @@ picture {
 
 .login-footer a:hover {
   text-decoration: underline;
+}
+
+/* Header Styles */
+.main-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 1rem 0;
+  width: 100%;
+  margin-bottom: 2rem;
+}
+
+.header-actions {
+  display: flex;
+  align-items: center;
+  gap: 1rem;
+}
+
+.logout-btn {
+  display: inline-block;
+  padding: 0.5rem 1rem;
+  background-color: #7f5af0; /* Same as .btn-primary */
+  color: #ffffff;
+  text-decoration: none;
+  border-radius: 6px;
+  font-weight: 500;
+  transition: background-color 0.2s ease;
+}
+
+.logout-btn:hover {
+  background-color: #6a48d7; /* Same as .btn-primary:hover */
 }
\ No newline at end of file
diff --git a/static/css/overlay-bright-green.css b/static/css/overlay-bright-green.css
new file mode 100644
index 0000000..20c860f
--- /dev/null
+++ b/static/css/overlay-bright-green.css
@@ -0,0 +1,28 @@
+body {
+    background-color: transparent;
+    color: #f0f0f0;
+    font-family: 'Inter', sans-serif;
+    font-size: 16px;
+    margin: 0;
+    padding: 10px;
+    overflow: hidden;
+    text-shadow: 0 0 5px rgba(57, 255, 20, 0.5);
+}
+
+.chat-container {
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+}
+
+.chat-message {
+    padding: 6px 10px;
+    background-color: rgba(10, 30, 10, 0.6);
+    border-radius: 6px;
+    border-left: 3px solid #39FF14; /* Neon green accent */
+}
+
+.username {
+    font-weight: 800;
+    color: #39FF14; /* Neon green */
+}
\ No newline at end of file
diff --git a/static/css/overlay-dark-purple.css b/static/css/overlay-dark-purple.css
new file mode 100644
index 0000000..ec5bc7d
--- /dev/null
+++ b/static/css/overlay-dark-purple.css
@@ -0,0 +1,28 @@
+body {
+    background-color: transparent;
+    color: #e0e0e0;
+    font-family: 'Inter', sans-serif;
+    font-size: 16px;
+    margin: 0;
+    padding: 10px;
+    overflow: hidden;
+    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.6);
+}
+
+.chat-container {
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+}
+
+.chat-message {
+    padding: 6px 10px;
+    background-color: rgba(26, 26, 46, 0.7); /* Dark blue/purple transparent background */
+    border-radius: 6px;
+    border: 1px solid rgba(127, 90, 240, 0.3);
+}
+
+.username {
+    font-weight: 800;
+    color: #a970ff; /* Twitch-like purple */
+}
\ No newline at end of file
diff --git a/templates/base.html b/templates/base.html
index 9b8eeea..2ac9ec9 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -18,6 +18,9 @@
                     <svg class="sun-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="24" height="24"><path d="M12 7c-2.76 0-5 2.24-5 5s2.24 5 5 5 5-2.24 5-5-2.24-5-5-5zM2 13h2c.55 0 1-.45 1-1s-.45-1-1-1H2c-.55 0-1 .45-1 1s.45 1 1 1zm18 0h2c.55 0 1-.45 1-1s-.45-1-1-1h-2c-.55 0-1 .45-1 1s.45 1 1 1zM11 2v2c0 .55.45 1 1 1s1-.45 1-1V2c0-.55-.45-1-1-1s-1 .45-1 1zm0 18v2c0 .55.45 1 1 1s1-.45 1-1v-2c0-.55-.45-1-1-1s-1 .45-1 1zM5.64 5.64c-.39-.39-1.02-.39-1.41 0-.39.39-.39 1.02 0 1.41l1.06 1.06c.39.39 1.02.39 1.41 0s.39-1.02 0-1.41L5.64 5.64zm12.72 12.72c-.39-.39-1.02-.39-1.41 0-.39.39-.39 1.02 0 1.41l1.06 1.06c.39.39 1.02.39 1.41 0 .39-.39.39-1.02 0-1.41l-1.06-1.06zM5.64 18.36l-1.06-1.06c-.39-.39-.39-1.02 0-1.41s1.02-.39 1.41 0l1.06 1.06c.39.39.39 1.02 0 1.41s-1.02.39-1.41 0zm12.72-12.72l-1.06-1.06c-.39-.39-.39-1.02 0-1.41s1.02-.39 1.41 0l1.06 1.06c.39.39.39 1.02 0 1.41-.39.39-1.02.39-1.41 0z"></path></svg>
                     <svg class="moon-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" width="24" height="24"><path d="M9.37 5.51A7.35 7.35 0 0 0 9 6c0 4.42 3.58 8 8 8 .36 0 .72-.02 1.08-.06A7.5 7.5 0 0 1 9.37 5.51zM12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10A9.96 9.96 0 0 0 12 2z"></path></svg>
                 </button>
+                {% if user %}
+                <a href="/logout" class="logout-btn">Logout</a>
+                {% endif %}
             </div>
         </header>
         {% block content %}{% endblock %}