that's easy 😏

you have to create this :

local part = game.workspace.part

local function fade()
for i = 1, 100, 1 do
part.Transparency += 0.01
end
end

fade()

Yes

here the function parameters in the photo above explained :

color1 : it's a brickcolor value
color2 : same as color1
color3 : again, same as color1

sec1 : the amount of sec to wait as shown in the photo like it if it was set to 2 sec, it will change the color each 2 seconds

and finally!

num1 : it's a number that if the counter variable is equal to the number after each loop, (like for an example, if num1 was set to 3, then we'll have 3 loops)

P.S some examples are shown in bottom of the photo iyk.

Classic ragebait

https://www.youtube.com/watch?v=gPjlmfmvGBs