This is a reasonably fast expandable 16 colour display that uses pixels sized 4x4x52.
The display accepts a 5 redstone tick cycle, or 2Hz signal.
Size is 4n+25 for X&Z and 52 for Y. "n" is the number of pixels


Byte breaks down to
00-Column
01-Row
10-Colour
11-Operator
+
(Coordinate/Colour/Operator)

Colours are all the concrete blocks in order starting from white at 0

Operatpors
11000000-Clear Column
11000001-Clear Row
11000010-Single Selaction Column
11000011-Single Selaction Row
11000100-Invert Odd Column
11000101-Invert Odd Row
11000110-Invert Even Column
11000111-Invert Even Row
11001000-All Selection Clear

e.g. 00000011-Toggles row 3 (Coordinates start at 0)
e.g. 11000011-Single Selaction Row (Meaning only 1 row selection at a time)

Operation of this display is similar to my previous 2 Colour Display