I'm gonna get on the bandwagon and support this thread. I could probably write a dissertation on the benefits of being able to change the background. As most people here, I don't think its much to ask for just the simplest of background modification: Colours!! Just adding the option of choosing the colour of the background would eliviate a lot of headaches. The best option for me would be the ability to insert your own image - My company's logo, a personal picture for my personal notebooks (stacks) or any other picture that represents the contents of the notebook/stack. That being said... just giving me colour options would be a step in the right direction.