To change the fonts and the colors, follow these instructions:

1. Firstly, you need to open the "Preferences" window. There are 3 possibilities to open it:
   
   • If you are on the "viewer" window, open the "Annotations" menu, in the top menu of the 2D Viewer window. Then, click on the "Preferences" sub-menu.
   
   
   
   • If you are on the "Database" window, click on the "Preferences" button.
   
   
   
   • In any window, use the combination of 'Ctrl' and 'P' keys (Press the 'Ctrl' key and hold it. While holding the 'Ctrl' key, hit the 'P' key).


2. After opening the "Preferences" window, click on "environment" tab, on the left side of the window.


3. On the top side of the window, click on "Fonts_Colors" button.


4. See below the layout of the "Fonts_Colors" panel:





• Line color: default color of lines for the annotations and regions of interest.
• Border color: default border color of the lines used for annotations and regions of interest.
• Paint color: default color of the display layer for the region of interest.
• Transparency: set the transparency value for the display layer of the regions of interest.
• Line width: default width of the lines used for annotations and regions of interest.
• Default display information: Set the default information displayed at the bottom right corner of the image for the region of interest.