I want the backround to shift colors, why won't this work?

Please tweak my local script the parent of local script is text label btw

Script:~~~~~~~~~~~~~~~~~

    ~~~~~~~~~~~~~~~~~
while true do
        script.Parent.BackgroundColor3 = Color3.fromRGB(252, 1, 7)
        wait(0.5)
        script.Parent.BackgroundColor3 = Color3.fromRGB(253, 128, 8)
        wait(0.5)
        script.Parent.BackgroundColor3 = Color3.fromRGB(255, 255, 10)
        wait(0.5)
        script.Parent.BackgroundColor3 = Color3.fromRGB(33, 255, 6)
        wait(0.5)
        script.Parent.BackgroundColor3 = Color3.fromRGB(32, 255, 255)
        wait(0.5)
        script.Parent.BackgroundColor3 = Color3.fromRGB(128, 0, 128)
        wait(0.5)
    end