# 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