scroll

mon = peripheral.wrap("back")
mon.clear()
width,height =mon.getSize()
text = "Alex sucks donkey balls"
colour = 1

while true do
  for i=1,width*2 do
    if colour > 32768 then
      colour = 1
    else
      mon.clear()
      mon.setCursorPos(width-i,height/2)
      mon.setTextColour(colour)
      mon.write(text)
      sleep(.1)
      colour = colour + colour
    end
  end
end