fresh-Wood is lighter Gnome shell theme with a real wood-looking panels, workspace-thumbnail-indicators and backgrounds. The theme is compatible with Gnome 3.2 / Gnome Shell Cinnamon 1.2.
1- Download the theme to ~theme folder
2- Then open gnome-tweak-tool and select the theme.
Then press Alt+F2 to reload your shell. and is done.
Note that the icons used in these screenshots are the Faenza-Icons, You can install theme using the followng ppa:
sudo apt-get update && sudo apt-get install faenza-icon-theme
If you need also to have the wallpaper, you can download it from this link.