# File lib/color/grayscale.rb, line 105
105:   def to_yiq
106:     y = @g
107:     i = (@g * 0.596) + (@g * -0.275) + (@g * -0.321)
108:     q = (@g * 0.212) + (@g * -0.523) + (@g *  0.311)
109:     Color::YIQ.from_fraction(y, i, q)
110:   end