How to fix math.random not randomizing part's BrickColor?

Hello there, I made a script in which the part named "painter" randomizes the color of another part named "Cover" with the math.random script, however upon trying it the Cover only appears as color Gold with the Paper aswell colored as Gold even though my script clearly says that the Paper should be white, how do I fix this?

NOTE: There is a script inside the "Cover" part which is just cloning it along with it's children

local RandomColorGenerator = math.random(1, 5)
local Cover = game.Workspace:WaitForChild("Cover")
local Paper = Cover.Paper
local painter = script.Parent

painter.Touched:Connect(function(Cover)
	if RandomColorGenerator == 1 then
		Cover.BrickColor = BrickColor.new("Navy blue")
		Paper.BrickColor = BrickColor.new("White")
	end
	if RandomColorGenerator == 2 then
		Cover.BrickColor = BrickColor.new("Maroon")
		Paper.BrickColor = BrickColor.new("White")
	end
	if RandomColorGenerator == 3 then
		Cover.BrickColor = BrickColor.new("Gold")
		Paper.BrickColor = BrickColor.new("White")
	end
	if RandomColorGenerator == 4 then
		Cover.BrickColor = BrickColor.new("Magenta")
		Paper.BrickColor = BrickColor.new("White")
	end
	if RandomColorGenerator == 5 then
		Cover.BrickColor = BrickColor.new("Sea green")
		Paper.BrickColor = BrickColor.new("White")
	end
end)

You wanna get a random number every time you touch it, so you use the math.random function every time you touch it:

local Cover = game.Workspace:WaitForChild("Cover")
local Paper = Cover.Paper
local painter = script.Parent

painter.Touched:Connect(function(Cover)
	local RandomColorGenerator = math.random(1, 5)
    if RandomColorGenerator == 1 then
        Cover.BrickColor = BrickColor.new("Navy blue")
        Paper.BrickColor = BrickColor.new("White")
    end
    if RandomColorGenerator == 2 then
        Cover.BrickColor = BrickColor.new("Maroon")
        Paper.BrickColor = BrickColor.new("White")
    end
    if RandomColorGenerator == 3 then
        Cover.BrickColor = BrickColor.new("Gold")
        Paper.BrickColor = BrickColor.new("White")
    end
    if RandomColorGenerator == 4 then
        Cover.BrickColor = BrickColor.new("Magenta")
        Paper.BrickColor = BrickColor.new("White")
    end
    if RandomColorGenerator == 5 then
        Cover.BrickColor = BrickColor.new("Sea green")
        Paper.BrickColor = BrickColor.new("White")
    end
end)

So I don't know why this works but I have a theory. It might be because it needs another part to touch it in the original script so you have to know if a player touched it for it to work. I used this Article by roblox to fix this. Also the reason its so different is because when I tried to test the code in studio it wouldn't work what so ever.

local Cover = workspace:WaitForChild("Cover")
local Paper = Cover.Paper
local painter = script.Parent

local function onPartTouched(otherPart)
	local RandomColorGenerator = math.random(1, 5)
	local partParent = otherPart.Parent

	-- Look for a humanoid in the parent
	local humanoid = partParent:FindFirstChildWhichIsA("Humanoid")
	if humanoid then
		if RandomColorGenerator == 1 then
			Cover.BrickColor = BrickColor.new("Navy blue")
			Paper.BrickColor = BrickColor.new("White")
		elseif RandomColorGenerator == 2 then
			Cover.BrickColor = BrickColor.new("Maroon")
			Paper.BrickColor = BrickColor.new("White")
		elseif RandomColorGenerator == 3 then
			Cover.BrickColor = BrickColor.new("Gold")
			Paper.BrickColor = BrickColor.new("White")
		elseif RandomColorGenerator == 4 then
			Cover.BrickColor = BrickColor.new("Magenta")
			Paper.BrickColor = BrickColor.new("White")
		elseif RandomColorGenerator == 5 then
			Cover.BrickColor = BrickColor.new("Sea green")
			Paper.BrickColor = BrickColor.new("White")
		end
	end
end

painter.Touched:Connect(onPartTouched)