Added Background Colour Customization button in home.html(Two Choices)

app/templates/home.html

@@ -167,6 +167,14 @@ body{
                             </div>
                         </div>
                     </form>
+                    <form method="POST">
+                        <div class="card-body">
+                            <hr style="border: 1px solid rgb(177, 176, 176);"/>
+                            <p><b>Background Colour Customization</b></p><br>
+                            <input type="image" src="static/logo/Background_Colour_Customization_White_logo.png" alt="white" id="theme_color" name="theme_color" value="white">
+                            <input type="image" src="static/logo/Background_Colour_Customization_Black_logo.png" alt="white" id="theme_color" name="theme_color" value="black">
+                        </div>
+                    </form>
                   </div>
                 </div>
               </div>