I had a lot of fun customizing it, the best part of GNOME Flashback? Well, it doesn’t mess my main Ubuntu desktop environment, in fact, both DE look very similar and have the same icons!! Only “Main Menu” was installed but it only affects GNOME Flashback. I love GNOME and Ubuntu so much.
Due to an oversight on my part, the announced Picture of The Year was ineligible since it was not original content. I sincerely apologize to @Stamets for my mistake. I often do things from my mobile and I missed that the original post was marked Not OC. A bit of egg on my face here....