local Lighting = game:GetService("Lighting")
local ColorCorrection = Instance.new("ColorCorrectionEffect")
ColorCorrection.Parent = Lighting

local function zigzag(X)
	return math.acos(math.cos(X * math.pi)) / math.pi
end

local Counter = 0
Lighting.TimeOfDay = "12:00"

while task.wait(0.1) do
	local color = Color3.fromHSV(zigzag(Counter), 1, 1)
	ColorCorrection.TintColor = color
	Lighting.Ambient = color
	Counter += 0.01
end