[mirotalksfu] - add red theme

public/views/Room.html

@@ -331,6 +331,7 @@ access to use this app.
                         <option value="grey">⚪ &nbsp;Grey</option>
                         <option value="green">🟢 &nbsp;Green</option>
                         <option value="blue">🔵 &nbsp;Blue</option>
+                        <option value="red">🔴 &nbsp;Red</option>
                     </select>
                     <br />
                     <p>Buttons bar:</p>