Custom Visor properties

Hi!
Right now I try to create custom visor for manage reference files in scene. It's so easy create panel with directory tree, but I can't assign proper position and color (white bkg) for it. In AW Visor dirictory tree placed in top left corner and it has white bkg color. My directory tree has grey color and I must always zoom and move it for correct placing. Please give me some idea how I can change bkg color (hyperGraph and Visor commands does not have -bgc option ) and place directory tree in left top corner and in proper size.

Hi!
I found a liitle bit strange behaviour of my custom visor panel. When my panel stay opened (still the same gray bkg and black color on selected dirname) and I open AW Visor it changes colors at my panel! Now dirnames shown in blue (I can see their names at least) and under a folder icon I can see white space. Any ideas?

Hi!
Anybody have any ideas?
Anybody use hyperGraph or visor mel command?