diff --git a/frontend/server/card.ejs b/frontend/server/card.ejs
index 012b3a0..ed679dc 100644
--- a/frontend/server/card.ejs
+++ b/frontend/server/card.ejs
@@ -9,7 +9,7 @@
 
   <body>
     <div id="demo">
-      <div id="waveform">
+      <div id="waveform" style="height: 200px;">
         <!-- Here be the waveform -->
       </div>
       <script>
@@ -21,8 +21,8 @@
           // Init
           wavesurfer = WaveSurfer.create({
             container: document.querySelector("#waveform"),
-            waveColor: "#A8DBA8",
-            progressColor: "#3B8686",
+            waveColor: "#BF675F",
+            progressColor: "#BF1000",
             backend: "MediaElement",
             mediaControls: true,
           });