De gjennomsiktige gummistrikkene rundt brakettene ble gule da jeg spiste karrisausen. Det er 2 uker til termin. Hvordan kan de rengjøres?

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?