How to Change Colours Back?

Hello! This is my first time scripting so sorry if this will be obvious So I am trying to make a mining/tycoon hybrid. I got a simple free model mountain (plz no hate), and added some Reddish Brown bricks to it I then added this snippet of code to the bricks that I found online and edited it, so that in theory you would click to mine then the block would turn grey then wait 5 second then it would change back to Reddish brown.

function onClicked(playerWhoClicked)
	script.Parent.BrickColor = BrickColor.DarkGray()
	wait(7)
	script.Parent.BrickColor = BrickColor.Red()
end

It, worked, mostly

See wherever I clicked it it turned grey like intended then after five seconds it would turn red not Reddish brown so then I tried this:

function onClicked(playerWhoClicked)
	script.Parent.BrickColor = BrickColor.DarkGray()
	wait(7)
	script.Parent.BrickColor = BrickColor.ReddishBrown()
end

It then gave me this error: Workspace.Part.Script:4: attempt to call field 'ReddishBrown' (a nil value) and the block was bright red again! I cannot seem to change this please help!

That's the safe way to do it. c: Though he's probably better than me, but here's another way to do it with variables.

local Color = script.Parent.Brickcolor
-- this could also work for materials
local Material = script.Parent.Material

--the function  c:
--SwardGames, you are many times better than me :p



script,Parent.ClickDetector.Mousebutton1Down:connect(
function
	script.Parent.Brickcolor = Brickcolor.new("Really Black")
	script.Parent.Material = "Neon"
	wait(1)
	script.Parent.Brickcolor = Color
	script.Parent.Material = Material
end)

Something like that c: