In relation to the full screen for Firefly, the "thumbs up" and "thumbs down" icons are miniscule and their yellow color does not stand out well against their white background.
I just generated some images and rated them with the tiny icons, and I think I clicked on "thumbs down" when I meant to choose "thumbs up" because it is very hard to distinguish between the two icons.
Make them a bit larger, please, and change the coloring so that they have better contrast to the white background. You will get more, and more accurate, ratings from us beta testers.