I upgraded to 3.1.7.104 Beta 104 today to verify the fix you implemented for taskbar colors.
Since upgrading I have noticed some odd behavior where you something have to click on a task bar button twice to bring the window to the front. This does not occur when the window is moved to the screen where windows is controlling the taskbar. This does not happen on all windows, but it is happening switching between two instances of Chrome.
Thanks for the feedback! I as able to find the bug, and it has been fixed in the upcoming Beta 6 release. You will be able to download Beta 6 here later in the week (currently beta is available): http://www.binaryfortress.com/Forum/index.php?topic=1310.0
One suggestion for your automatic updates... You might want to have your installer check for a command line parameters like -u and run in an update mode and not prompt the user to select the installation folder, etc during an update. A silent install per say. When display fusion runs the setup it would specify this command line parameter. Just a though ... something I do with software I build.
Beta 7 is available now, and it has quick updates now. When you update from Beta 6 to Beta 7 it won't do the quick update, but once you have Beta 7 installed, updating to future versions will use the quick update. It's very slick, excellent idea!