Well, I customized my Spyro The Dragon game with custom icons today (you can see the icons I used below), and after successfully converting my game, it seems that the "warnings" screen that displays right before the PS1 game starts it completely skipped. I found this to be pretty cool, but I have no idea how it happened. The exact homemade icons I used are below. Feel free to use them yourself for your own Spyro game.