There is a place for artistic expression on the visual outside of artistic acoustic instruments on the inside...if you get my drift.
Admittedly, there really are multiple camps in the trumpet world....two such:
Creative artists making new aural palettes...things which never before existed...
Hardworking bandsmen faithfully reproducing a score, a period, a mood.
The former are artists in the creativity brought forth.
The latter are artistic in the adherence to and interpretation of a score.
That is a big difference, and some of that difference will manifest in other ways than the sound.
The creative artists will tend to be more fluid in many aspects of their lives...more openly "divergent".
These are the ones who would possibly embrace a varied visible variance, and revel in the difference it makes.
The bandsmen are more rigid in their world...more adherent to a subscription. These are tools, tools with which to predictably and faithfully reproduce the earlier creative inspirations of others. Their goal is not to be divergent, but to be faithful...there is artistry in the depth of their faithfulness of execution.
The former express through creation...
The latter express through execution.
Different neural networks employed.
It's not the old idea of right-brain versus left brain as once thought...
The different neural networks are woven throughout both hemispheres of the brain.
When painting, I can tell when I "switch" from one neural network to the other...My state of being and realization obviously changes...the physical world melts away around me, and the object of my focus brightens, closens, shimmers, I see more clearly a magnified sense of depth of texture...surfaces vary in sheen, reflectivity....
The creative state is a wonderful place...musically, visually, or however it is entered.
Alice ran down the rabbit hole to get there.
We can, too.