Having trouble changing frame color via script? [Solved]

I want the frame to automatically change color from green to red instead of me manually changing it every time it gets hit. It doesn't work even though it still prints 'test' without running into any issues

green = 255
red = 0

local frameColor = script.Parent.HP.BillboardGui.Frame.BackgroundColor3

function onTouched(hit)
	if hit.Name == 'Damage' then 
		green = green - 18
		red = red + 18
		script.Parent.Sound:Play()
		frameColor = Color3.new((red), (green), 0)
		print('test')
		if red == 255 and green == 0 then
			print('finished')
		end
	end
end