Color Filter sRGB

This command is not ideal as it operates in the sRGB space. For alpha operations it doesn't matter, and for grayscale conversion it matches various international standards.

{ 
  "color_filter_srgb": "grayscale_ntsc"
}

{ 
  "color_filter_srgb": "grayscale_flat"
}

{ 
  "color_filter_srgb": "grayscale_bt709"
}

{ 
  "color_filter_srgb": "grayscale_ry"
}

{ 
  "color_filter_srgb": "sepia"
}

{ 
  "color_filter_srgb": "invert"
}

• alpha: 0..1

{ 
  "color_filter_srgb": {"alpha":  0.5}
}

• contrast: -1..1

{ 
  "color_filter_srgb": {"contrast":  0.5}
}

• brightness: -1..1

{ 
  "color_filter_srgb": {"brightness":  0.5}
}

• saturation: -1...1

{ 
  "color_filter_srgb": {"saturation":  0.5}
}