Here we go: a very crude version of the configuration UI and two screenshots of the dream (with and without a background).
The configuration is loaded from the registry at startup (and initialized if the dream is started for the first time). You can tweak it by changing the registry keys as the UI is not functional at the moment.
Once I have the config UI working I will make a test build available (probably not a .Dream at first) so that you can play with it a little 🙂
(Background picture is Valentine Favorites by craftilyeverafter – Particle tutorial by Almar Joling was a great help)