Script somewhat works?

Please forgive me if this seems like something simple, I am currently a beginner in learning Lua. Anyways, I was trying to make a script in which when you are touching the brick (In my case when I am standing on top) the brick turns a different color (Blue), and when you step off of the brick it turns back to red. It does what it's supposed to do, however, when ever I walk across the brick it flashes between red and blue, kind of like I am not touching it when walking. I don't get it. If you don't know what I mean here is the script:

function onTouch() script.Parent.BrickColor = BrickColor.new("Bright blue") wait(1) end

function offTouch() script.Parent.BrickColor = BrickColor.new("Bright red") wait(1) end

script.Parent.Touched:connect(onTouch) script.Parent.TouchEnded:connect(offTouch)

Could someone help, and if possible maybe there is a more efficient way of doing this?

The only more efficient way I can think of goes like this:

script.Parent.Touched:connect(function()
	script.Parent.BrickColor = BrickColor.new("Bright blue")
	wait(1)
end)
script.Parent.TouchEnded:connect(function()
	script.Parent.BrickColor = BrickColor.new("Bright red")
	wait(1)
end)

Shorter and should work a teensy bit faster, its just embedding a function within an event. Hope that helps!