GetChildren help to reach a destination?

Hello, thanks for reading.

Error: 17:27:14.449 - Workspace.Meltdown Detector:63: 'end' expected (to close 'function' at line 6) near ''

I am having trouble with GetChildren while getting to the destination.

So, this is part of my script

		local mainframelights = workspace.MainframeLights:GetChildren()
		for i = 1, #mainframelights do
    	mainframelights.Light.PointLight[i].Color = Color3.new(255, 0, 0)
end

And this is my module workspace:

Workspace
	MainframeLights (Module)
		Light (Module)
			Light (Part)
				PointLight (PointLight)
		Light (Module)
			Light (Part)
				PointLight (PointLight)
		Light (Module)
			Light (Part)
				PointLight (PointLight)
		Light (Module)
			Light (Part)
				PointLight (PointLight)
		Light (Module)
			Light (Part)
				PointLight (PointLight)
		Light (Module)
			Light (Part)
				PointLight (PointLight)

Thanks if you helped! :)