Question black background in all popup windows

is it possible to set background color to BLACK in all popup windows (default is this ugly grey )
In custom Romīs like CM or slimbean it is totally black with white letters.
Searched xda-forums and aunt google, but no success
Attached Thumbnails
Click image for larger version

Name:	Screenshot_2014-02-06-13-46-54.png
Views:	492
Size:	26.8 KB
ID:	2562475