The xViz Performance Flow provides various formatting options like font and colors for the UI elements on the visual are available in the Display menu.
Image 1: Font & Colors formatting
To format the font and colors for the node, go to the "Display" option in the top ribbon.
Image 2: Display option in top ribbon
You will find the options to format the font and colors of the node in the "Display" section of the visual.
Image 3: Font & Color formatting options
This way you have the flexibility to configure the visual to the best of your needs.