(at around 46 mins) When black says lights off for the first time, the lights are switched off. Before going off the lights are red and When brown says lights on the lights are on again but they are blue this time.
The goof item below may give away important plot points.
When Black takes the gun from the guard's holster it is a Glock, but when White takes it from him and checks the clip it turns into a Sig Sauer. When White puts the gun in the guard's hand it turns back into a Glock.