1 :
function zigzag(X) return math.acos(math.cos(X*math.pi))/math.pi end

counter = 0

while wait(0.1)do
 Frame.BackgroundColor3 = Color3.fromHSV(zigzag(counter),1,1)

 counter = counter + 0.01
end
2:
while wait(1) do
 Frame.BackgroundColor3 = Color3.fromHSV(math.random(100)/100,1,1)
end