Agreed, that looks good. It might even looks better than the original, I think the black and translucent look better than the beige. (I know, sacrilege.)
Thanks for the tutorial and drive images. I did this in 2020 and had a difficult time finding all the info and software needed to do it. I eventually succeeded, but this tutorial would have made it much easier.
For Tiger and Leopard I would suggest MacMAME and the correct MAME ROMset for the version of MacMAME you are using.
In this case, search for MAME 0.103u2 ROMset and Samples. You might also try searching for MacMAME ROMs, there might be something out there.