Don't type the parentheses just the stuff inside.
Type(@echo off), that will disable the commands so it doesn't look weird. now you need to type (color d), this will make the numbers purple. now to start the matrix you type (:top) this will make a "folder" then you type (echo %random% %random% %random%) etc you should just highlight a %random% with a space and then ctrl c then ctrl v alot of times. once you think you got enough type (goto top) once all that is typed you go to file save as and name it (matrix.bat) this program wont work without the .bat . Find were you put the file and open it. you will see random numbers that are purple. There is your purple matrix hope you enjoy.