This extension checks drawings in your model for any non-allowed fonts. And it can also change the color of those fonts.
Check the checkbox if you want to inspect only the fonts of the selected drawings. Leave it unchecked to inspect all drawings.
Each row represents an allowed font. It must start with the font name, followed by semicolon and allowed heights for that font. Heights should be separated by semicolons
Check the checkbox if you want to change the color of the not allowed fonts.
Choose what color you want to change those fonts to.
Choose where you want to have the results saved as a csv

It depends on the configuration you have opened. If you have a steel detailing configuration opened, it will not affect the colors of the cast unit drawing fonts, and so on.
How to check the results