vignette
Virtual lighting effect. Will darken or tint the edges of the screen to other colors, can be used to simulate some of Arcaea's anomaly effect.

Parameters
color(color, default color:black): Color at the edges of the screen.extend(float, default value:0.25, range:0-1): The extension from the edge, the larger the value, the more black parts.radius(float, default value:15.0): Size of central light, the smaller the value, the greater the range affacted.