How to change color of Fog?

I have this fog changing coloring script, but for some reason it won't work.

while wait() do
if game.Lighting.TimeOfDay == "06:00:00" then
	script.Parent.FogColor = Color3.new(158,186,250)
else if game.Lighting.TimeOfDay == "19:00:00" then
	script.Parent.FogColor = Color3.new(57,57,57)
		end
	end
end

I assume that my day/night script is interfering with this script, but my lamp script I made works perfectly fine unlike this one.

-- Turning On and off script

		Light = script.Parent.PointLight
while wait() do
if game.Lighting.TimeOfDay == "19:00:00" then
	Light.Enabled = true
	script.Parent.Material = "Neon"
else if game.Lighting.TimeOfDay == "06:00:00" then
	Light.Enabled = false
	script.Parent.Material = "DiamondPlate"
	
	end	
end
end

Any clue on how to get this Fog color change to work?

Here's the day/night script if needed:

l = game:service("Lighting") 
while true do 
l:SetMinutesAfterMidnight(l:GetMinutesAfterMidnight()+0.1)
wait(.1)
end