The shape of the zero sign

[MPvDam]

Is it possible to slash the zero or add 1 pixel. He looks now very small in compare to the other numbers. Now he has 2 dots but i think is more likeable when this are 3 dots.

[dirtmover]

The font is customized. You can do what you want with it. Specifically, the zero is here:

https://github.com/rob040/LEDmatrixClock/blob/master/lib/Adafruit%20GFX%20Library/glcdfont.c#L71