1. It's a medical device, a barely visible one at that, not a fashion statement.
2. Color is not even in the top 1000 concerns I have about a hearing aid.
And since you stated your age as relevant, I am well over 40 and have been wearing aids since kindergarten.
I reduced the list of the most primordial articles until I get to the point of knowing which is the most appropriate for my deafness. For example, this year 6 audiograms, a tympanoplasty surgery, and countless visits to the specialist.
I also strive to raise the necessary money to buy a brand that is a little above the average level.
You can see my numbers, my two ears are more deaf than your bad. Let me tell you how I see it, since I have reduced that list, why not have a little fun, sweeten and cheerfully celebrate my deafness.