Well... I don't want to install Easy Debian on top of Hildon and then xfce4 on top of Easy Debian. I just want to replace Hildon with something which wouldn't have too much black color, transitions, blur, shadows, png decorations, etc. And as any desktop environment for Fremantle has to be compiled, I think about matchbox-desktop: matchbox-window-manager already works on Fremantle.