Random Text Colors

-- Random Text colors
-- Set monitor
mon=peripheral.wrap("right")

-- Set main text color
mon.setTextColor(colors.white)

-- Wipe monitor
mon.clear()

-- Set cursor at top-left position
mon.setCursorPos(1,1)

-- Big!
mon.setTextScale(3)
mon.write("Bug's")

-- Do the same with bottom line of text
mon.setTextColor(colors.white)
mon.setCursorPos(1,3)
mon.write("Shop")

-- Local variable
local color = 1

-- Randomize the seed based on Operating System's time
math.randomseed(os.time())

-- Main loop

while true do

-- "D"

  -- Second line, first letter
  mon.setCursorPos(1,2)

  -- Get random number for our color
  -- Ignore if zero, we don't want white, and only go to 14 so we don't get black

  color=math.random(14)

  if color > 0 then
    mon.setTextColor(2^color)
    mon.write("D")
  end

-- Do the same for last 2 letters
-- "y"

  mon.setCursorPos(2,2)

  color=math.random(14)

  if color > 0 then
    mon.setTextColor(2^color)
    mon.write("y")
  end

-- "e"
  mon.setCursorPos(3,2)

  color=math.random(14)

  if color > 0 then
    mon.setTextColor(2^color)
    mon.write("e")
  end

-- Wait for 0.1 seconds before doing another set of colors
  sleep(0.1)

end