error attempt to call field 'fromRBG' (a nil value)?

	Tiles = Instance.new("Model")
	Tiles.Parent = game.Workspace
	Tiles.Name = "Tiles"
	Tiles.Archivable = true
	brickArray = {}
	red = 30
	
for i=1,30, 1 do
	Brick = Instance.new("Part")
	Brick.Name = "Brick" .. i
	Name = Brick.Name
	table.insert(brickArray, Brick.Name)
	Brick.Parent = game.workspace.Tiles
	Brick.Anchored = true
	Brick.Size = Brick.Size + Vector3.new(20,0,22)
	Brick.Color = Color3.fromRGB(0,0,0)
	Brick.Locked = false
	if i < 6 then
		Brick.CFrame = CFrame.new(24*i,0,0)
		elseif i < 12 then
		Brick.CFrame = CFrame.new(24*(i-6),0,24)
		elseif i < 18 then
		Brick.CFrame = CFrame.new(24*(i-12),0,48)
		elseif i < 24 then
		Brick.CFrame = CFrame.new(24*(i-18),0,72)
		elseif i < 30 then
		Brick.CFrame = CFrame.new(24*(i-24),0,96)
	end
end

	Brick.Touched:Connect(function(hit)
		Brick.Color = Color3.fromRBG(10, 0, 0)
	end)

This script keeps returning the error attempt to call field 'fromRBG' (a nil value). This doesn't make sense to me because I've used this function just a few lines above the second time and it works fine. Why is this throwing me an error?