class Sickill::Rainbow::RGB

Helper class for RGB color format.

def self.outside_range?(rgb) 

def self.outside_range?(rgb)
  rgb.min < 0 or rgb.max > 255
end

def self.to_ansi_domain(value)

Change domain of color value from 0-255 to 0-5 
def self.to_ansi_domain(value)
  (6 * (value / 256.0)).to_i
end