Thanks for the responses. No one has really said 'Urrgh, that looks horrible' so that's good for me. I want to be seen, and for $17usd for a roll of tape, I thought that was a pretty easy and cheap way of doing things.
Driving at night these past few days in my car, I have noticed how much bikes are 'hidden' by the headlights of the car BEHIND/following them. The one bike light can look like one of the headlights lights on the car, and so the bike is not seen. It was this that made me look again at what I can do to be a bit more visible. As for the rims - circular lights certainly make people take notice since it's unusual. Again, a good thing.
So, I hope to stay safe by being seen.