Update app.py

app.py

@@ -19,7 +19,7 @@ def extract_waveform_animation(audio_file, window_seconds=5):
     first_window = y[:window_length]
     x_vals = np.linspace(0, duration, num=len(y))
     ax.set_axis_off()
-    waveform_color ="#0033cc"
+    waveform_color ="(0,33,228)"
     bg_color ="#00FFFF00"
     ax.set_facecolor(waveform_color)
     fig.set_facecolor(bg_color)