Decal Color Changer?

Hello, I need a script that will change the color of my decal, I know how to make a text label change colors and thats this script:

while true do
	for i=1, 255 do
		script.Parent.TextLabel.TextColor  = Color3.new(1,i/255,0) --red to orange
		wait()
	end
	for i=1, 255 do
		script.Parent.TextLabel.TextColor  = Color3.new(1- (i/255),1,0) --orange to green
		wait()
	end
	for i=1, 255 do
		script.Parent.TextLabel.TextColor  = Color3.new(0,1,i/255) --green to turquoise
		wait()
	end
	for i=1, 255 do
		script.Parent.TextLabel.TextColor  = Color3.new(0,1-(i/255),1) --turquoise to blue
		wait()
	end
	for i=1, 255 do
		script.Parent.TextLabel.TextColor  = Color3.new(i/255,0,1) --blue to purple
		wait()
 	end
	for i=1, 255 do
		script.Parent.TextLabel.TextColor  = Color3.new(1,0,1-(i/255)) --purple to red
 		wait()
 	end
end 

Maybe you can revise that to where it changes the color? Well, thanks!

-- Toby Scott aka ExplicitToby

Unless your decal is transparent you can't change the colour of it with Roblox unless you've pre-made them and then change the ID via a script.

Just to mention, this isn't a request site. You should go away and have a go yourself and come back when you've hit some problems. Also for future reference, the ~~~~~~~~~~ of the codeblock should be above and below your code and not on the same lines otherwise it won't work, as demonstrated by yourself.