I've been wondering about that part - can a manufacturer demand reimbursement for their product being used in a video, movie or the like? Can Ford get money for Disney using a Ford car in a movie?
I would think that once the product is sold, the owner would be free to use it to their hearts content, including using it in a video, on TV, etc?
That pearl triangle/rectangle thing might be trademark too. Maybe you should just put a paper bag over the headstock. But then the true meaning the tape conveys would be lost. No Gibson or facsimile on the bandstand for me so no tape, no bag.
I would be embarrassed to show up to any gig with a guitar taped over like this, no matter who made it. At that point you're a paid professional and are expected to act like one. I would just play a different guitar if this is that big of a deal to you.