It was a great quiz! If it wasn't for the fact that I had access to the internet, it would have been REALLY challenging :D
Sure you can use them. Even though I say they're for Trainer MJB, I'm happy to let anyone use them, as long as they credit me! I'll be adding Silver's and Crystal's soon.
BTW, I said I'd do some messing around with the Ruby Titlescreen. Check out my album! ^-^