My part is not fading(lerping) between colors

Question

I am trying to make a part constantly fading between two colors but for some reason I am getting this error. How do I fix it?

while true do
    script.Parent.Color = script.Parent.Color:Lerp(Color3.fromRGB(52, 63, 127))
    repeat 
        wait()
    until script.Parent.Color == Color3.fromRGB(52, 63, 127)
    script.Parent.Color = script.Parent.Color:Lerp(Color3.fromRGB(127, 0, 127))
    repeat 
        wait()
    until script.Parent.Color == Color3.fromRGB(127, 0, 127)
end

Answer 1

You gave to add a second parametre alpha (a number between 0 and 1) to all calls of Color:Lerp, setting the proportion in which colors are mixed, after the Color3.fromRGB calls.

See https://developer.roblox.com/en-us/api-reference/datatype/Color3.

Why is the third parametre called second? Because technically, first is self (since the function Lerp is called after :), the second is the colour and the third is alpha.