Can anyone tell me if it's possible to have a black mucocele? = (

Hello there,
I woke up this morning to find a lump on the inside of my cheek. It looks like most of the other pictures I found, but mine is a dark red- dark black color. Does this mean it's not a mucocele? Any advice? Thank you so much!! = ) (I would post the picture, but do not see an attatchment option on this site?)