Slowwwww shutter speed in the dark, pt 1

I've wanted to try this for a long time.  I took a bunch of photos in the dark with an extremely slow shutter speed (between 8 and 15 seconds).  When the shutter was depressed, I took a couple of different coloured lights and swirled them around in various patterns.  Here are a few of the results.  Definitely something I'd like to experiment more with.  Also, I'll need some more lights so that I can vary the colours!