tiedot_black is a work in progress with the goal making my N9 look how I think it should look. Based on the hard work of ceroberts75’s Cyan75 theme and F2thaK’s F.D.B. theme,

Install

Untar into the /usr/share/themes/ directory on your N9, then run:
gconftool -s --type=string /meegotouch/theme/name tiedot_black

Your N9 will pause, then as the apps refresh, the new theme will emerge.

Back to stock

Don’t like tiedot_black?
gconftool -s --type=string /meegotouch/theme/name blanco
will get you back to the stock blanco theme.