change qtcreator3.6.0 backbround color on ubuntu 14.04

most of steps have been listed on: https://github.com/mervick/Qt-Creator-Darcula

1. download the theme file from the website

2. there are 2 files and 1 folder we need, namely, darcula.css, darcula.xml and images

3.  put darculal.xml and folder images under  /opt/qtcreator-3.6.0/share/qtcreator/styles

4. create a new folder named stylesheet under  /opt/qtcreator-3.6.0/share/qtcreator/ and then put the darcula.css into this stylesheet folder.

5. set the startup parameter

open /usr/share/applications/Qt-Creator.desktop in gedit and change its contents to:

[Desktop Entry]
Version=1.0
Encoding=UTF-8
Type=Application
Name=QtCreator
Comment=QtCreator
NoDsiplay=true
Exec=/opt/qtcreator-3.6.0/bin/qtcreator %f -stylesheet=/opt/qtcreator-3.6.0/share/qtcreator/stylesheet/darcula.css
Icon=/opt/Qt5.5.1/Examples/Qt-5.5/location/mapviewer/resources/icon.png
Name[en_US]=Qt-Creator

if you don't have this file, create one by yourself. how to create? pls refer to http://blog.youkuaiyun.com/seamanj/article/details/50595966

6. open qtcreator 3.6.0, tool->options->test editor->environment->text editor->color scheme

choose the one we just added

done!

the final effect looks like: