Math.Random on lighting is not working for some reason?

This is a script inside a ColorCorrection in lighting

while true do
local color = math.random(1,4)
if color == 1 then
	script.Parent.Brightness = -0.05
	wait(3)
	print("1")
else
	if color == 2 then
		script.Parent.Brightness = -1
		wait(0.2)
		script.Parent.Brightness = -0.05
		wait(1)
		print("2")
	else
		
		
		if color == 3 then
		script.Parent.Brightness = -1
		wait(0.2)
		script.Parent.Brightness = -0.05
		wait(0.1)
		script.Parent.Brightness = -1
		wait(0.2)
		script.Parent.Brightness = -0.05
		wait(4)
			print("3")
			
			if color == 4 then
	script.Parent.Brightness = -0.05
	wait(3)
				print("4")
				
			end
		end
	end
end
wait(1)
end

To make the screen randomly flash black, not working, nothing in output not even printing

any idea as to what I did wrong? :p

Your issue is, that you're not supporting us with the Output showing the error. Also, from what i've determined and understanding, you're not using your elseif correctly. Here is what I suggest:

while true do
local color = math.random(1,4)
if color == 1 then
    script.Parent.Brightness = -0.05
    wait(3)
    print("1")
    elseif color == 2 then
        script.Parent.Brightness = -1
        wait(0.2)
        script.Parent.Brightness = -0.05
        wait(1)
        print("2")
    elseif color == 3 then
        script.Parent.Brightness = -1
        wait(0.2)
        script.Parent.Brightness = -0.05
        wait(0.1)
        script.Parent.Brightness = -1
        wait(0.2)
        script.Parent.Brightness = -0.05
        wait(4)
        print("3")
     elseif color == 4 then
    	script.Parent.Brightness = -0.05
    	wait(3)
	print("4")
end
wait(1)
end