make things a little bit nicer

To get transparency working in Fluxbox in openSUSE 13.2, I had to turn on "Pseudo-Transparency" (Fluxbox Configuration > Config > Transparency > Force Pseudo-Transparency):

From that same Transparency menu, you can then adjust the alpha for focused windows, unfocused windows, and the menu (alpha value: opacity increases to a max of 255).

You can also adjust the alphas for the slit and for the toolbar:

Then get yourself some coffee and get some real work done.