Class represents color
Since this class is immutable, you can use it as if it is a value.
eql? method and hash method were redeclared so that instances of Color class can be used as keys of Hash.
Class mothod
Color.new(red, green, blue, alpha = 255)-
Generate new Color object.
Each color factor must be set between 0 and 255.
Instance methods
self == other-
Compares whether the color is the same value or not.
redgreenbluealpha-
Get values of each components(red, green blue, alpha) as integer (0 〜 255) .