HTML/CSS/COMPOSITE/DECIMAL AND HEX RGB COLOR CODES
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         COLOR_COMPONENT   DECIMAL   HEXADECIMAL
        -----------------  --------  -----------
         R = RED Level     0 to 255   00 to FF
         G = GREEN Level   0 to 255   00 to FF
         B = BLUE Level    0 to 255   00 to FF

         On an RGB monitor display, every color on the screen is made
         up of various combinations of intensity levels of red, green
         and blue (RGB).

         Each RGB level means the intensity or brightness level of the
         individual RGB colors, where each RGB color has 256 levels of
         brightness from 0 to 255, and can be combined to create over
         16 million total possible shades or colors.

         However, some shades are actually duplicates, so there are
         actually a few less distinct colors, but there are still
         many millions of unique colors in the palette.

         More precisely:

         Since there are 3 primary colors, Red, Green and Blue and 256
         possible intensity values for each RGB color:

         Let:
         p = 3   = Number of primary colors (R,G,B = 3 Colors)
         b = 8   = Number of binary bits per primary color
         N = 256 = Number of color intensity levels (0 = Min;  255 = Max)

         Each RGB composite value = R+G+B = 8+8+8 = 24 binary bits

         T = Total possible unique composite RGB color codes
           = (N ^ p)    =  256 ^ 3
           = (2 ^ p*b)  =  2^(3*8)  =  2 ^ 24
           =  16,777,216

         Maximum decimal value of binary integer = (2 ^ bits) − 1
         In the context of 8-bit RGB values:
         The maximum decimal value of RGB code = (2 ^ b) − 1
                                               = (2 ^ 8) − 1
                                               =  256 − 1
                                               =  255

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            Given the decimal (R,G,B) color levels, the corresponding
            composite color code (C) value can be computed by:

            C = R*65536 + G*256 + B

            The composite color (C) values range from 0 to 16777215.

            The composite color value  acts like a sequential serial
            number for each of the exactly  16,777,216 shades of the
            RGB spectrum, from 0 = Black to 16777215 = White and all
            the other 16,777,213 RGB shades in between.

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            Given the composite color code (C), the corresponding
            decimal (R,G,B) levels can be extracted by using the
            following algorithms, where:

            R = floor(C / 65536)
            B = C mod 256
            G = floor((C − R*65536 − B) / 256)

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               INVERSE or NEGATIVE RGB and COMPOSITE COLOR CODES

            To obtain the negative or inverse of an RGB color
            simply subtract each of its RGB levels from 255.

            Inv_RGB(R,G,B) = RGB(255−R, 255−G, 255−B)



            For the negative or inverse of a composite value (C),
            simply subtract the composite value from 16777215.

            InvCompositeValue = 16777215 − C

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