I love dark paintings and especially love the look of flowers at night. They take on an almost glowing look. One of my goals was to plant a night blooming flower garden. I haven't done it yet, but it is definitely on my "to do someday" list. Lots of white blooms, with plenty of fragrance. It would be so calming and peaceful in the moonlight :)
I painted this one just the other day. It is a 4" x 6" oil and acrylics. It is on Ebay here
I have some other ideas for some night floral paintings, but need to find the time to paint them.