Room Signs

local monitor = peripheral.wrap("monitor_##")

local i = 0

function getRandColour()
    if i == 0 then
        i = 1
        return colours.red
    elseif i == 1 then
        i = 2
        return colours.blue
    elseif i == 2 then
        i = 3
        return colours.yellow
    else
        i = 0
        return colours.grey
    end
end

while (true) do

monitor.clear()

monitor.setCursorPos(1,1)

monitor.setTextScale(1.7)

monitor.setTextColor(getRandColour())

monitor.write("MESSAGE HERE")

monitor.setCursorPos(1,2)

monitor.write("Access Level #")

os.sleep(1)

end