<oXygen/> supports Syntax Highlight for XML, DTD, Relax NG (XML and Compact Syntax), Java, JavaScript, PHP,CSS, XQuery, C++, C, Perl, Properties, SQL, Shell and Batch documents. While <oXygen/> provides a default color configuration for highlighting the tokens, you may choose to customize, as required, using the Colors dialog.
The Syntax Highlight preferences panel is opened from menu → → +Editor+Syntax Highlight
Open the Syntax Highlight panel by selecting Window->Preferences->oXygen->Syntax Highlight and choose one of the supported Document Types. Each document type contains a set of Tokens. When a Document Type node is expanded, the associated tokens are listed. Selecting a token displays the current color properties and enables you to modify them. You can also select a token by clicking directly in the preview area on that type of token.