What we call moonlight is really just sunlight reflected from the surface of the moon. It is white light; it has the same color balance as sunlight. Our eyes are poorly suited to detecting colors at low light levels, but a long exposure photograph using moonlight reveals the true colors of autumn leaves.
Taken October 12, 2014 at Towle Field, Carlisle, Massachusetts
Nikon D300s, 18mm, f/3.5, 30 s, ISO 800
For a similar shot see the 1995 card.
One of my attentive card recipients points out that moonlight is actually skewed towards the red (color temperature is 4000K vs 5500K for sunlight) which probably enhances the autumn colors!