is there a way to change the color of the background to another color besides white in the thumbs view panel?

i really want black - with white,green or red lettering.
i understand color codes - just enough to hurt myself. if some one can tell me where in the program files to change it - i would be greatly appreciative.
i have already tried to change the colors on the thumbnail table.dax, but i returned it to normal - it was wrong .dax file.

i changed all other colors to scheme way i want. This would make it perfect.

Thanks ???