We went around midnight and the employee didn't wa...

We went around midnight and the employee didn't want to let us in because we didn't have any masks. My friend puts on his handmade mask and he doesn't want to let it in because it's not a blue mask ?! Completely ridiculous ... I don't know who is in charge of the management but there is a serious problem concerning the night workers some let us in others not. I personally believe that some do what they want.