rainbow

local tArgs = { ... }

m = peripheral.find("monitor")
m.setTextColor(colors.black)
m.setTextScale(3)

local function centerText(m, text)
    local x,y = m.getSize()
    local x2,y2 = m.getCursorPos()
    local fg, bg = ""
    m.setCursorPos(math.ceil((x/2)-(text:len()/2)), math.ceil(y/2))
    m.write(text)
end

while true do
        for i = 1, 14 do
        centerText(m, tArgs[1], 2^i)
        m.setBackgroundColor(2^i)
        m.clear()
        centerText(m, tArgs[1])
        print("Color: "..m.getBackgroundColor())
        sleep(0.2)
    end
end