A color band has gone missing from one of my brackets? ORTHODONTISTS PLEASE HELP!?

Okay so, i've been having problems with a powerchain that used to be on my bottom teeth, it kept ripping and the orthodontist said it's due to the way my brackets are manufactured and blah blah blah, so i got just the single colors on individual brackets on the bottom. but now on one of my back teeth, i noticed that i am missing one of those bands. the bracket is perfectly fine, the wire is still running through.. but the color that was wrapped around it is gone. is this a big deal? my next appointment is august 2nd and i really don't understand what the color band is there for anyways? please explain if this is effecting my treatment and what i should do? thank you so much for reading my story. not to sound ignorant, but are these colors just for decoration? my bracket is perfectly fine, it's weird lol!