why is this script not working to change both a color and number value?

I want to make this script change a value for a datastore and change the color of the part. I have been posting a lot of questions but I think this one is the last for now.

whenever I try to run the script nothing happens. the value doesn't change and neither does the color.

here is the script (local but I could change it to nonlocal I think.)

Gravel = workspace.Things.gravel
Button = script.Parent

function color(player)
	local ColorNum = player.DataFolder.GravelColor.Value
	Gravel.BrickColor = BrickColor.new("Cyan")
	ColorNum = 3
end



game.Players.PlayerAdded:Connect(function(player)
	while true do
		color(player)
		wait(0.2)
	end
end)

Any idea on how to fix this?

HEYO, I remember you on the other comment and you said it was a local script, so I updated my script so it could fit. Remove the playeradded event and just use LocalPlayer

while true do
	color(game.Players.LocalPlayer)
	wait(.2)
end

SORRY IF I CONFUSED YOU ON THE OTHER QUESTION