One of my favorite things to witness (usually via video) is someone being persistent, to the point of annoyance, bring told "no" every time, with varying degrees of profanity mixed in.... Then when something happens that makes the annoying person who is persistent finally stop (usually involving physical violence), they say "all you had to do was say no!"
Aaaahahahaha. You were an annoying little shit and wouldn't take no for an answer despite being told no repeatedly. You deserved what you got, you dumb fuck.
You can get tape that's not clear nor is it completely opaque.
You can find dark colored "clear" style tape.
Alternatively, take a sharpie to some Scotch tape. Color to preference.