Fade in and out colors script?

I am trying to make it so that the parent of the script (the part) will fade colors in and out. I am fairly new to scripting so this is probably wrong.

while true do
	script.Parent:connect(function(a,b,c)
	for i = 1, 255 do
		script.Parent.Color = Color3.new(+1, +1, +1)
	end
end)
if a = 255 and b = 255 and c = 255 then
	for i = -1,255 do
		script.Parent.Color = Color3.new(-1, -1, -1)
	end
end
if a = 0 and b = 0 and c = 0 then
	for i = 1,255 do
		script.Parent.Color = Color3.new(+1, +1, +1)
	end
end

end