rainbow.lua

local component = require("component")
local sides = require("sides")
local rs = component.redstone
local event = require("event")


local goodColors = {[0]=1,2,3,4,5,6,9,10,11,13,14}

local c = 0
local running = true

local colorSet = {[0]=2, 14, 1, 4, 13, 5, 3, 9, 11, 10}

local nextColor = 0

while running do

  local eventID = event.pull(.1, "key_down")
  if (eventID) then
    running = false;
    break
  end

  if (c > #colorSet) then
    c = 0
  end

  nextColor = colorSet[c]

  rs.setOutput(sides.left, nextColor)
  rs.setOutput(sides.right, nextColor)
  rs.setOutput(sides.front, nextColor)
  rs.setOutput(sides.back, nextColor)

  c = c + 1
  os.sleep(1)
end