How to successfully script a trapping 'death plate'?

while true do
	
	wait(4)
	script.Parent.BrickColor=BrickColor:("Bright red") 
	wait(0.1)
	script.Parent:CanCollide = false
	wait(4)
	script.Parent.BrickColor=BrickColor:("Lime green")
	wait(0.1)
	script.Parent:CanCollide = true
	wait(0.1)
	
end

What I'm trying to do is to change the colour of the script's parent ( a brick ) and also to make it uncancollided and then reversed in a continuous loop. I don't see why it wouldn't work, so anybody could give me some help on that?

Current output: 18:14:29.211 - Workspace.DisappearingBrick.Script:4: '' expected near '('

use script.Parent.BrickColor = BrickColor.new("Bright red")