dlight,
if I remember correctly you clown is still a juvenile right? So he hasn't developed his full spectrum of colors yet. So tell your dad to be patient. Once that clown gets bigger, you can throw in a goldfish once every blue moon, and I guarantee your dad will think that is pretty cool.
Once thing I do when I look at my tank and get bored is I buy a little more live rock and rearrange the tank some. Create some more caves in different places, stuff like that. Just some suggestions...........