settings.yml

logo_invert_colors: true
logo_hue_rotation:
  default: -90
  type: integer
  description: "Specify a value in degrees to change the color of your logo. If you don't know what this is you could leave it in 0 or google 'css filter hue rotation'"
  min: -360
  max: 360
logo_brightness:
  default: 2
  min: -10
  max: 10
  type: integer
  description: "Set the amount of brightness you want to add to your logo (if you want to make it darker, set a negative number)"

enable_hats:
  default: true
  description: "Show Christmas hat on avatars?"