module Term
module Term::ANSIColor
module Term::ANSIColor::Attribute::Underline
module Term::ANSIColor::Hyperlink
module Term::ANSIColor::Movement
module Term::ANSIColor::RGBColorMetrics
module Term::ANSIColor::RGBColorMetrics::CIELab
module Term::ANSIColor::RGBColorMetrics::CIEXYZ
module Term::ANSIColor::RGBColorMetrics::CompuPhase
module Term::ANSIColor::RGBColorMetrics::Euclidean
module Term::ANSIColor::RGBColorMetrics::NTSC
module Term::ANSIColor::RGBColorMetrics::YUV
module Term::ANSIColor::RGBColorMetricsHelpers
module Term::ANSIColor::RGBColorMetricsHelpers::NormalizeRGBTriple
module Term::ANSIColor::RGBColorMetricsHelpers::WeightedEuclideanDistance
class Term::ANSIColor::Attribute
class Term::ANSIColor::Attribute::Color256
class Term::ANSIColor::Attribute::Color8
class Term::ANSIColor::Attribute::IntenseColor8
class Term::ANSIColor::Attribute::Text
class Term::ANSIColor::HSLTriple
class Term::ANSIColor::PPMReader
class Term::ANSIColor::RGBColorMetrics::CIELab::CIELabTriple
class Term::ANSIColor::RGBColorMetrics::CIEXYZ::CIEXYZTriple
class Term::ANSIColor::RGBColorMetrics::YUV::YUVTriple
class Term::ANSIColor::RGBTriple
term-ansicolor
1.11.2
# gray?
def gray? rgb_color? && to_rgb_triple.gray? end