Does The Pack Of Oxcodone 30 Mg Comes With One White Pill?

I take oxcodone 30 mg and I just picked up my presricption and there was 1 white with 30 on it andit looked the same but it was white and even had the m on it like all the rest of my pills in the script blue and had the m on it. Could it be the same pill just another color???? I the the pharmacy back and they said they couldn t discuss this over the phone with and when I ask them if I could rturn that single pill and again they said the couldn t discuss that over the phone. But do the make a 30mg white oxcodone???