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Select File > Settings.
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Select Appearance in the left list.
GUI preferences
Font face: Select the font for text displayed in the interface.
Font size for GUI: Enter the font size for text displayed in Pirana.
Number of rows to display in Pirana: Set the number of rows that are visible in table.
Additional note colors: User-defined colors, in addition to default colors, that are used to mark/filter models. These appear in the list when 
is selected in the main toolbar. To add additional colors to the list, go to https://www.rapidtables.com/convert/color/rgb-to-hex.html, use the sliders to get a color you like, click Convert, and you will get a 6 digit hex code (e.g., #9425EF, which is deep purple). Enter the code (omitting the #), e.g., 9425EF, into the field, and the color will appear as an additional option in the list.
Editor preferences
Theme to use for the editor: Color theme for the built-in editor.
Font size for editor: Enter the font size for text displayed in the editor.
Note:Once modifications are made and you have saved them, restart Pirana for the changes to take effect.
