anchor: love.graphics.getBackgroundColor
  Gets the current background color.
  
  In versions prior to 11.0, color component values were within the range of 0 to 255 instead of 0 to 1.
  r, g, b, a = love.graphics.getBackgroundColor()
  r number The red component (0-1).
  g number The green component (0-1).
  b number The blue component (0-1).
  a number The alpha component (0-1).