When choosing a tinted moisturizer you should pick a shade that matches your skin tone as closely as possible. If it is summer time then it is ok to go a shade darker than your skintone.
If your hair is dyed, then it would make it lighter, but if it is natural it may not have an effect. But if I had to give a definite answer, Lighter
Darker.
darker
== Lighter, just opinion. == A darker foundation or "base" would work better. Do a quick drawing and check it out if you can't visualize it. From the ground up, it gets lighter, and that's a more "natural" progression.
Darker
lighter
The darker the hair colour the harder it is to lift to a light blonde e.g. somebody with black hair would not get a white blonde look. Lighter hair can be lifter even lighter or turned darker much easier.
Darker or heavier depending on meaning of lighter
the concrete will dry lighter.
Lighter colors reflect some heat while darker colors absorb it.
darker
darker!