I have a fix for Win8 users with upsidedown icons and inverted colors:
In addition adding "-w" to the end of the target for windowed mode, go into the "Compatibility" tab and select "Run in 640x480 screen resolution"
This worked on my Win8 tablet and I'm a happy camper. Note: you need to have a mouse connected for Rebellion to start up. Windows 8 takes patience young padawans, patience. Except for the new start button. That is the spawn of the dark side