I use WindowMaker as my X desktop environment, and I use multi-aterm as my multi-tabbed terminal window manager.
The application itself is still considered to be in 'development', but I've been using it for about 2-3 years now and I haven't had too many problems. The coolest part about it, is it's really light-weight, and allows transparent backgrounds (as well as many more features).
The command below is what I generally use to run multi-aterm with a transparent (green tinted) background, and a white foreground.
multi-aterm -tr -trsb -fg white -tint green &
I've added that command (above) to one of my WindowMaker Menus, which may be why I can never seem to remember the commands, so I'm adding it as a snippet here for my own future reference.