OpenPeripheral: Colourful Illuminators

-- WARNING: Updating a large amount of Glowstone Illuminators will cause framerate lag!

local function disperse(col)
  for _,n in pairs(peripheral.getNames()) do
    if peripheral.getType(n) == "glowstone_illuminator" then
      peripheral.call(n, "setColor", col)
    end
  end
end

local source = {R = 0; G = 0; B = 0;}

local function fade(target)
  for i = 0, 30 do
    local ratio = i/30
    local red = math.floor(target.R * ratio + source.R * (1-ratio))
    local green = math.floor(target.G * ratio + source.G * (1-ratio))
    local blue = math.floor(target.B * ratio + source.B * (1-ratio))
    disperse(bit.bor(bit.blshift(bit.bor(bit.blshift(red, 8), green), 8), blue))
    sleep(0.5)
  end
  source = target
end

while true do
  fade({R = math.random(0,255); G = math.random(0,255); B = math.random(0,255);})
end