Hi Pez, thanks for making this ! Can I make some observations here ? Only very small things but if it can get better why not I guess.
First I added some games and then went in and added a picture to them, but when choosing another game, the filename of the previous game is still shown. Also when trying to change the background color I did have to change the color first in the left dialog (with all the shades of the color) before I could chooses another base color. This happened every time. So not a biggie because everything works fine if you know what to do.