I like mustard and I like peaches. I don't like mustard on my peaches.
You did a fine job for a friend. I think the swirly plastic has little call on a cue, that with the rest of the cue makes no sense from any design standpoint. I would caution you to be weary of agreeing to a customer's desires. In the end, it is your name that goes on the build, it would be unfortunate to be associated with too many designs that clash just because the customer wanted it.
The two biggest lies in business are:
1. Safety first. It can't be, so don't pretend it is. First is always the job, second or third is figuring out how to do it safely.
2. The customer is always right. I worked at an elite engineering firm designing things for some extremely large companies. Our Chief of Staff once told a group of us that our job is not to give the customer what they want, it is to provide what they need.
No disrespect intended, as I said, you performed the task well.