Emphasize in ALV

Emphasize is a 4-char field where :

     - 1st char = C (color property)

     - 2nd char = color code (from 0 to 7)

          0 = background color

          1 = blue

          2 = gray

          3 = yellow

          4 = blue/gray

          5 = green

          6 = red

          7 = orange

     - 3rd char = intensified (0=off, 1=on)

     - 4th char = inverse display (0=off, 1=on)