Simple Theme with light colors for xfce4, tested on ubuntu 14.04.2.
This theme is based on the beautiful Orion gtk theme (satya164.deviantart.com/art/Or…
I made the following changes: window manager (xfwm), scrollbar, slider, sidebar file manager (thunar), add panel and made small changes in it
Background panels can be found in the folder ~/.themes/Sky/gtk-2.0/img.
Have two options: transclucent and not transparent.
There you can find the button for the menu. It is made with Inkscape (font Urw Gothic L).
You can use it instead of the standart.
Update for xubuntu 14.04 and others distr based on ubuntu 14.04. New buttons for xfwm manager. See folder /gtk-2.0/img there are some icons for theme