change the Ubuntu system background color

sudo -i gedit /usr/share/themes/Ambiance/gtk-2.0/gtkrc

tooltip_fg_color:提示框前景色 (改为：#000000)

tooltip_bg_color:提示框背景色 (改为：#f2edbc)

line1: base_color:#C7EDCC (eye-protecting green)

then change the theme to Ambiance

system settings -> appearance -> theme

Change the background color in eclipse

Change the color of background

Preference > Text Editor > Background Colors

solution for Eclipse reporting Error 127 and "no make rule"

you have to install autoconf and autoconf-archive
sudo apt-get install autoconf
sudo apt-get install autoconf-archive
Additionally: automake package
sudo apt-get install automake

ECB options

http://www.xemacs.org/Documentation/packages/html/ecb_5.html

auto-activate (in preference)