OzBsidian colour scheme for Oracle SQL Developer

This is a spinoff of Obsidian colour scheme for Oracle SQL Developer. It is based on [Obsidian Eclipse colour scheme by Morinar] (http://eclipsecolorthemes.org/?view=theme&id=21).

Installation

Unfortunately Oracle doesn't make it easy to import a new colour scheme into SQL Developer, thus a little bit of hacking is required.

Close SQL Developer. This is important. If you modify the scheme file while SQL Developer is open, your changes won't be saved.
Locate file dtcache.xml in the SQL Developer's settings directory. On my system it is located in directory C:\Users\sergey\AppData\Roaming\SQL Developer\system4.0.3.16.84\o.ide.12.1.3.2.41.140908.1359
Locate <schemeMap> tag inside dtcache.xml file. Insert the content of ozbsidian-scheme.xml file inside <schemeMap> alongside the other colour schemes. Be careful not to break the XML.

Insert the contents of ozbsidian-scheme.xml after opening schemeMap tag

Launch SQL Developer. Navigate to menu Tools->Preferences, then select item Code Editor -> PL/SQL Syntax Colours in the left pane.
Select "OzBsidian" in the "Scheme" drop down list on the top.