While I don't think your tool is for everyone your site design is. Love the colors and clean design, goes a long way towards making me want to understand Nanobox.
_Ars_ addressed this issue in the FAQ for their 2004 redesign:
http://arstechnica.com/uncategorized/2004/10/redesign/
> Q. Why the white? Oh my eyes!
> A. Believe it or not, many people cannot read the "black" version of the site. This has been the #1 complaint Ars has received since day one. We thought it unwise to continue to use a default color scheme that was driving so many users away. Once it was clear that we could support both, we did, but white will be the default. The black design was also unfavorable to readers in corporate environments, and other places where the scheme sent the wrong signals to bosses and cubicle neighbors.