how to change the background color of window every 5 seconds automatically using javascript code example

Example: how to make a color change every second

local part = --what ever you want it to be
table = {
  Brickcolor.new("Bright Red"),
  Brickcolor.new("Forest Green"),
  Brickcolor.new("Lime Green")
end
while true do
	part.Brickcolor = math.random(table)
end