Roblox Rainbow Gui

local rainbow = {}
local size = 64
local gui = script.Parent

function color3FromHex(n)
n = math.floor(n)
local b = n % 256
local g = ((n-b)/256)%256
local r = (n-b-g*256)/65536
return Color3.new(r/255,g/255,b/255)
end

local function numberToString(x)
local options = {'F', 'E', 'D', 'C', 'B', 'A'}
return options[16-x]
end

local function hexOf(i)
local base = math.floor(i / 16)
local remainder = (i - (base * 16))
if base >= 10 then
base = numberToString(base)
end
if remainder >= 10 then
remainder = numberToString(remainder)
end
return (base..remainder)
end

local function sin_to_hex(i, shift)
local sin = math.sin(math.pi / size * 2 * i + shift)
local int = math.floor(sin * 127) + 128
local hex = hexOf(int)
return hex
end

for i = 0, size do
local red = sin_to_hex(i, 0 * math.pi * 2/3)
local blue = sin_to_hex(i, 1 * math.pi * 2/3)
local green = sin_to_hex(i, 2 * math.pi * 2/3)
local result = (red..green..blue)
table.insert(rainbow, result)
end

local x = 0
local y = 0

for i = 1, #rainbow do
local frame = Instance.new("Frame")
frame.Parent = gui
frame.Size = UDim2.new(0,20,0,20)
frame.BorderSizePixel = 0
frame.BackgroundColor3 = color3FromHex("0x"..rainbow[i])
x = math.random(20, 60)
y = math.random(60, 200)
frame.Position = UDim2.new(0,x,0,y)
end

while wait() do
for i,v in pairs(gui:GetChildren()) do
if v.ClassName == "Frame" then
x = math.random(20, 60)
y = math.random(60, 200)
t = math.floor((math.random()*100)-0.5)
v.Position = UDim2.new(0,x,0,y)
v.BackgroundTransparency = t
end
end
end