Thread on filters: HOW TO: Using Filter
If you’re playing through a scene in black and white, you must also reach the reset code for the filter (@reset hsl in 0). So if you’re on the scene and before it reaches the reset code (@reset hsl in 0), you go somewhere else in your script, the filter carries over because the reset code (@reset hsl in 0) for the filter was never registered. Hope what I’m saying makes sense 
