Effects > Colors
Colors
Click one of the child items.
Effects > Colors > Invert
Effects > Colors > Rotate Color Channels
Effects > Colors > Swap Color Channels
Effects > Colors > Invert Lightness
Effects > Colors > Grayscale
Effects > Colors > Sepia
Effects > Colors > Reduce Colors
Effects > Colors > Holga (1)
Effects > Colors > Holga (2)
Effects > Colors > Replace Color