Builder showing white background

[ams_nanolab]

I'm trying to run ATK on Debian (Rex Wheezy), when I open builder its' showing white background. The system info is


Virtual NanoLab - Atomistix ToolKit - Version 2014.2
======================================================
System information
===================
Build: 2014.2.811a2e4
Platform: Linux
Python 2.7.2
Qt 4.8.5
PyQt 4.10.3

OpenGL information
===================
Vendor: Tungsten Graphics, Inc
Renderer: Mesa DRI Intel(R) Sandybridge Desktop
Version: 3.0 Mesa 8.0.5
Shading language version: 1.30

What's wrong? How to get black / grey background in the builder?

[Umberto Martinez]

Please try this solution
http://quantumwise.com/support/faq/item/591-the-background-of-the-3d-visualization-in-the-builder-and-the-viewer-is-white-instead-of-black