Originally created by Aleksandar Palic and the theme has been modified to support Xcode 6.
Some colour and font changes were made to suit my needs.
Sunburst theme can be now installed through Alcatraz.
$ git clone git://github.com:kjunggithub/xcode-sunburst.git
$ cd xcode-sunburst
$ mkdir -p ~/Library/Developer/Xcode/UserData/FontAndColorThemes/
$ cp Sunburst.dvtcolortheme ~/Library/Developer/Xcode/UserData/FontAndColorThemes/After file has been copied over, restart Xcode.