What happens when someone refuses to accept a promotion to a higher rank in JuJitsu?

we're about to have promotions in our dojo.. there will be a lot of people and many honored guests there, and most students are very excited and really looking forward to getting promoted.. everyone EXCEPT me.. the problem is that I am not interested in ranks, for me the color of the belt is meaningless. I'd rather have my sensei tell me that I've mastered/completed at least 1 move absolutely perfectly than to get another rank.. So would it be considered to be an offense if I refuse to accept a promotion?