Write in Java with 0OOP concepts six classes, to read a number of the color in RGB style and convert it to grayscale, the numbers that read are in decimal format. The five classes are: Main -- to...

Extracted text: Write in Java with 0OOP concepts six classes, to read a number of the color in RGB style and convert it to grayscale, the numbers that read are in decimal format. The five classes are: Main -- to define an object, read, run Color - a superclass which controls all subclasses Red - to save the color number and return its value when request. Green - to save the color number and return its value when request.. Blue - to save the color number and return its value when request. Gray - it receives all RGB values and returns a grayscale value.