Les élastiques transparents autour des supports sont devenus jaunes lorsque j'ai mangé la sauce au curry. Il reste 2 semaines avant le rendez-vous. Comment les nettoyer ?

I ate chicken curry yesterday and my clear ligature elastics literally turned phosphorescent yellow! I brushed it but it doesn't come off. My appointment is in 15 days, can they come early and just change the tires?