Using this page of the Preferences dialogue box you can configure various aspects of the program's display. The page is accessed by selecting the Tools | Preferences menu item then clicking on Display in the list on the left of the window.
The options are:
Specify the colours used for the following interface elements:
Choose the required colours from the appropriate drop-down colour lists. Custom colours can be created: just select the Custom... option from the top of the drop down list and choose or create the colour in the displayed colour dialogue box.
Default colours for all the above interface elements can be restored by clicking the Use Default Colours button.
Similarly, the size of font used in the details pane is set using the Detail pane font size combo box.
Note: this combo box does not affect the size of the font used to display source code – this can be changed on the Syntax Highlighter Preferences page.